trek powerfly carbon

Trek goes carbon and improves integration with the new Powerfly

The Powerfly's integrated battery is definitely worth a look

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By Tom Marvin

Published: June 21, 2018 at 5:00 pm

I spent a bit of time on the Trek Powerfly LT 9 Plus

Since Trek updated and expanded its Powerfly range of e-MTBs last year, it has refined its frames, adding tyre clearance and battery integration, and is now offering carbon versions of the longer travel LT Powerfly.

  • Trek Powerfly LT 9 Plus first ride review
  • Electric Enduro is now a thing

Trek argues that riders want this better integration, giving cleaner lines and yet also want a bike that’s easier to live with.

The new system is a side-loading 500Wh Bosch PowerTube battery, which integrates the battery with a handle and a cover, to keep the whole shebang looking smart. Trek calls this its ‘Removable Integrated Battery’ or RIB for short.

trek powerfly carbon

Trek went side-loading because it believes the majority of riders lay their bike on its non-driveside when removing the battery — as such the battery pops out of the driveside side of the down tube.

This is also likely to be cleaner than the underside of the down tube. The little carry handle that pops out also makes carrying it that little bit easier. It’s the little things, huh?

trek powerfly carbon

Trek has also increased rear-tyre clearance out to 2.8in on its full suspension models. These bigger tyres are there to make the most of the power available when climbing and to give extra security when descending.

Powerfly Range

trek powerfly carbon

The new battery design will be found across almost the entire range, which has had quite the overhaul.

The Powerfly full suspension range includes the 130mm FS variant for riders looking for the traditional e-MTB experience — long days in the hills, plenty of accessibility to the countryside.

Top-end 9 and 7 models have 2.8in tyres, while the 5 and 4 come with 2.35in tyres, on the 650b wheels.

trek powerfly carbon

Then there’s the Powerfly LT. This has 150mm of frame travel with 160mm forks and, as you’d expect, is a more gravity-orientated ride. New to the range though is the addition of a carbon frame to the LT series. I’ll delve into more details about this bike later.

The hardtails still exist too. The line-up includes the Powerfly Sport hardtail and comes with fenders, a rack mount, lights and kickstand. Trek calls this its SUV bike, and I reckon it could be perfect for those commuters who have to tackle unpaved cycle paths on their way to work.

trek powerfly carbon

The regular hardtails come with 29in and 650b options, with the entry-level model (and the Sport model) having the older semi-integrated battery design.

There will also be a number of women’s specific models: two full suspension (non-LT) and three hardtails. These go down to an XS 14in size, with a lower stand-over height on the Medium, Small and XS frames.

trek powerfly carbon

Trek Powerfly European pricing

  • Trek’s Powerfly hardtails range from £2,250 to £3,400 / €2,499 to €3,799 
  • The Powerfly Sport is £2,400 / €2,699
  • 130mm travel full-suspension models (Powerfly FS) range from £3,200 to £5,000 / €3,499 to €5,499
  • LT models (Powerfly LT) range from £3,600 to £7,250 / €3,999 to €7,999
  • US pricing TBC

Trek Powerfly LT range details

The LT version of the Powerfly is probably going to appeal to most riders — after all, if you have a motor to help on the climbs, you might as well take the option of extra travel too.

There are five models in the range, three with an alloy frame and two with a carbon front triangle (but alloy back end). The cheapest LT 4 model only has the semi-integrated battery option. I had access to the LT 9 Plus for a couple of days, so c heck out my first ride review of the bike.

trek powerfly carbon

I wasn’t surprised to see Trek adding to the Powerfly range with a couple of OCLV carbon models in its flagship LT range.

Trek says the use of carbon drops 650g in weight from the bike — that would be really significant in a non-powered bike, but on an e-MTB I’m not convinced you’re going to notice that drop too much. However, there’s no denying carbon frames look that little better and that the higher end market does want carbon frames.

The side entry for the battery means the 150mm frame has room for a bottle mount, and the carbon frame versions have mounts on the underside of the top tube to fit the new generation of tool storage solutions that require bolts.

trek powerfly carbon

Up front there are 160mm forks, from Fox (the 36 Factory on the top model, Performance on the third-tier model), RockShox (Yari RC on model two and four in the line-up) and SR Suntour Aions on the base LT 4 model. All of the forks are rated for e-MTB use by the manufacturer.

The rear suspension uses RockShox Deluxe shocks, with the top carbon and alloy versions getting the Re:aktiv pedalling platform tune.

A range of Bontrager’s wheels are used, and all have a wide internal profile to support the 2.8in Bontrager XR4 tyres with a reinforced sidewall that comes as standard on all but the cheapest LT bikes. 

trek powerfly carbon

Brakes are four-pot designs across the range because Trek says these are best to offer the power required by brakes on e-MTBs. Bontrager provides the finishing kit for all of the bikes. 

The two cheapest alloy bikes use Shimano 11-speed gears, while the other three use SRAM Eagle 12-speed set ups. These have been tuned with single shift levers (instead of the multi-shift thumb lever), and the new NX level 11-50t cassette, across the board. This is because it’s the only 12-speed cassette rated by SRAM for e-MTB use.

Bosch’s motor is used because Trek says its global service and support network is impressive, as is its ability to meet the volumes needed by Trek.

Tom Marvin / BikeRadar

Senior technical editor

Tom Marvin is a technical editor at and MBUK magazine. He has a particular focus on mountain bikes, but spends plenty of time on gravel bikes, too. Tom has written for BikeRadar, MBUK and Cycling Plus, and was previously technical editor of What Mountain Bike magazine. He is also a regular presenter on BikeRadar’s YouTube channel and the BikeRadar podcast. With more than twenty years of mountain biking experience, and nearly a decade of testing mountain and gravel bikes, Tom has ridden and tested thousands of bikes and products, from super-light XC race bikes through to the most powerful brakes on the market. Outside of testing bikes, Tom competes in a wide range of mountain bike races, from multi-day enduros through to 24-hour races in the depths of the Scottish winter – pushing bikes, components and his legs to their limits. He’s also worked out that shaving your legs saves 8 watts, while testing aerodynamics in a wind tunnel. When not riding he can be found at the climbing wall, in his garden or cooking up culinary delights.

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Trek Powerfly LT 9.9 Plus Review

trek powerfly carbon

The Trek Powerfly LT 9.9 Plus is the result of several years of evolution. In this latest iteration, the bike features a classy carbon frame, a smartly integrated battery and the proven Bosch Performance CX motor. Will the bike still manage to convince our test riders?

For more information on the group test head to: The best eMTB you can buy

trek powerfly carbon

Trek and Bosch have been in a partnership for years. With the Powerfly LT 9.9 Plus, the American brand proves how neatly the proven Performance CX motor can be integrated into the frame. They’ve also paid special attention to user-friendliness, making it very easy to remove the PowerTube battery from the side. Without fumbling, without dirty hands, the integrated handle makes it possible – well done.

The Trek Powerfly is one of the best Bosch driven eMTB currently available on the market

trek powerfly carbon

If you’re willing to fork out € 7,999, you will receive the top-end model with a wisely chosen mix of components where performance takes priority. For example, Trek relies on a SRAM XX1 Eagle drivetrain but opts for reliable and powerful Shimano XT four-piston brakes. The suspension features a combination of a RockShox Deluxe RT3 RE:aktiv shock and a FOX 36 Factory GRIP2 fork. Completing the package, you’ve got Bontrager Line carbon wheels. Although the new Bontrager Line dropper post is an improvement over the previous version, its lever still doesn’t do justice to the otherwise high-quality impression.

trek powerfly carbon

Trek Powerfly LT 9.9 Plus in Detail

Fork FOX 36 Factory GRIP2 160 mm Rear shock RockShox Deluxe RT3 RE:aktiv 150 mm Motor/Battery Bosch Performance CX/ PowerTube 500 Wh Drivetrain SRAM XX1 Eagle Brakes Shimano XT 4 piston 200/200 mm Seat post Bontrager Line 160 mm Stem Bontrager Line Pro 60 mm Handlebar Bontrager Line Pro 770 mm Wheels Bontrager Line Pro 40 Carbon Tires Bontrager XR4 Team Issue 27.5×2.8″

trek powerfly carbon

Geometry of the Trek Powerfly LT 9.9 Plus

Trek powerfly lt 9.9 plus in review.

trek powerfly carbon

Like its predecessors, the Trek Powerfly LT 9.9 Plus is a powerful climber. This is due in part to the powerful Bosch Performance CX motor, which is easy to modulate in eMTB mode, but it is also the result of the excellent geometry. As the rider, you are positioned very centrally on the bike, and thanks to the long rear linkage and the low front end, the front wheel stays firmly planted on the ground, even on steep inclines.

trek powerfly carbon

The Trek is very comfortable to ride on flat sections too. Going downhill, there are significantly more agile bikes, but the Powerfly scores with its composed and predictable handling. It is easy and quick to manoeuvre, willingly changing direction at your command. However, the low front end pulls the rider forward and on steep descents, you’ll find yourself tensing up to keep your weight central. If you ride a lot of technical trails, we recommend fitting a handlebar with more rise. As you’d expect from Trek, the suspension performs brilliantly. It sovereignly filters out even the slightest bumps, and it isn’t bothered by bigger hits either, all without excessively isolating the rider from the trail – perfect. The Bontrager XR4 Team Issue tires offer excellent grip and puncture protection.

Riding Characteristics

Motor feeling, motor power, value for money, technical data.

The Trek Powerfly LT 9.9 Plus is one of the best Bosch driven eMTBs currently available on the market, able to convince with excellent climbing characteristics, well-balanced handling and stylish battery integration. If you want a great looking eMTB with a proven motor and composed handling, you will find it here!

trek powerfly carbon

  • excellent suspension
  • balanced, composed handling
  • good climbing capabilities

trek powerfly carbon

  • front too low on steep descents
  • cumbersome in tight sections

For more information head to:

trek powerfly carbon

All Bikes in Test

Canyon Spectral:ON 9.0 | Focus JAM² 9.8 DRIFTER |  GHOST HYBRIDE SL AMR X S 7.7+ LC |  Giant Trance E+ 0 Pro | Haibike XDURO AllMtn 8.0 FLYON | Husqvarna HC 9.0 | Intense Tazer |  Lapierre eZesty AM LTD Ultimate | MERIDA eONE-SIXTY 900E | Mondraker Level RR |  Scott Genius eRIDE 900 TUNED | Specialized S-Works Turbo Levo FSR |  Thömus Lightrider E1 | Trek Powerfly LT 9.9

This article is from E-MOUNTAINBIKE issue #016

E-MOUNTAINBIKE Magazine is published in a digital app format in both English and German. Download the app for iOS or Android to read all articles on your tablet or smartphone. 100% free!

trek powerfly carbon

"The mountain hut is the destination, not the trails" – rides mainly on gravel paths and flowy singletrack, comfort plays a crucial role. ↩

The focus is on riding fun. Riding skills: from beginner to experienced – the range extends from flowy singletracks to demanding technical trails. ↩

A rider with very good bike control – rides on demanding and challenging technical trails, uphill as well as downhill. ↩

The rating used for riding characteristics refers to the bikes in the group test and the current state of development of eMTBs. The best bikes managed to blend supposedly opposite riding characteristics, feeling both lively and stable at the same time. The handling describes the balance of the bike on downhill sections. The information regarding motor-power refers to the ride-feeling in the overall context of the bike and not exclusively to the motor – that’s why the same motor can present different values. ↩

Did you enjoy this article? If so, we would be stoked if you decide to support us with a monthly contribution. By becoming a supporter of E-MOUNTAINBIKE, you will help secure a sustainable future for high-quality cycling journalism. Click here to learn more .

Words: Photos: Trev Worsey

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Trek Powerfly

Trek Logo

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We search for prices on over 120 bike retailers to guarantee that we find the lowest prices – to save you time and money.

It’s a promise we stand behind: If you find a lower price on a bike elsewhere, we will sell it to you for 10% less. For example, if you find a bike for $480 that we have listed at $500, we will offer you to buy it for $432 through BikeRide. The bike must be the same color and size, sold in the US and not include the use of a coupon.

If you find a lower price, email us at [email protected] with documentation of the price. We’re committed to making sure that the cost of a bike does not keep you from cycling!

Summary of Reviews

We have read all expert and user reviews on the Trek Powerfly . In summary, this is what cyclists think.

15 reasons to buy

  • Owners reported an impressive range of up to 80mi and 7000ft of elevation.
  • A 71yo owner easily handled a daily climb of 500ft, on a 25% grade driveway.
  • A desert resident said the Powerfly rode easily, through soft sand.
  • Tektro hydraulic brakes were deemed responsive and “pulled hard”.
  • The 5’s fit and finish was described as “beautiful and rugged”.
  • ‘Touring’ mode was great on roads, while ‘eMTB’ mode was excellent in the woods.
  • A removable battery made it easy to mount the powerfly on vehicle racks.
  • Powerfly drivetrains pedaled smoothly on the flats, despite the bike’s weight.
  • The Bosch Performance CX motor exhibited plenty of torque on climbs.
  • One owner cooed over the Powerfly 4’s metallic red paintwork.
  • The Powerfly 7’s TransX dropper-post made mounting and dismounting easy.
  • Overweight riders found the Powerfly’s carrying capacity to be more than ample.
  • One reviewer found that the Powerfly 4’s 100mm of fork-travel covered needs.
  • Shifting, range and gear spacing were lauded on the Powerfly 5’s drivetrain.
  • Some reviewers felt that the weight of the bike aided stability.

7 reasons not to buy

  • The Powerfly was heavy, and onerous to pedal up hills without assistance.
  • Some owners would have liked to be able to easily add a second battery.
  • The Powerfly’s high-level component spec made it a pricey option.
  • Some owners felt that the Powerfly’s paintwork was easily chipped.
  • One daily user reported delayed engagement of the power assist in snowy areas.
  • Schwalbe Smart Sam tires punctured easily, on the ‘Sport 4 Equipped’.
  • Some owners sought a way to lock the motor without removing the battery.

Bottom line

Expert reviews, trek powerfly 5.

The Trek battery holds a good charge… I reckon there’s enough power to last 60 to 80 miles if you’re careful.

Trek Powerfly 4 on Exmoor Review

…outstanding fun with steep descents and river crossings followed by challenging climbs which the Powerfly managed with such ease! …I was surprised at the sub-20-mile range I achieved on this test-ride…

User Ratings

Your rating, best electric bikes.

trek powerfly carbon

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Trek Powerfly LT 9.9 Plus

  • AUS $ NZD $ USD $ CAD $ GBP £ EUR €

Weight / M - 22.77 kg / 50.2 lbs (with tubes)

At a glance

Powerfly LT 9.9 is a carbon full suspension electric mountain bike with the highest-level parts and suspension spec in the lineup. Incredible design, extraordinary capability, and a no-compromise components package that includes carbon wheels and SRAM’s flagship Eagle drivetrain put Powerfly LT 9.9 in a class of its own.

Where To Buy

Trek Logo

"Trek electric bikes are some of my favorites"

"It's nice to have a dropper post, fully-adjustable suspension, and a frame that is well-balanced. The drive system is positioned well and performs incredibly. Trek really dialed in their rear suspension and ABP reduces skipping so the rear wheel track the ground. The removable battery pack with a handle makes this an easy bike to lift, transport, service on the trail, and park securely."

"An absolute riot"

"On terrain that an elite-level XC racer would struggle to conquer, the Powerfly winched up huge mountains with seamless power delivery, especially in eMTB mode that automatically matches your effort. Planted and sure-footed on the descents, it gives you the confidence to release your grip on the powerful brakes and push the tires to the limit."

"Easily one of our top choices"

"The eMTB mode is a fantastic alternative to the manually adjusted power settings found on most other e-bikes. The beauty is that eMTB mode works so well, you can forget about it entirely and focus on the ride instead. Having e-bike specific forks and four piston brakes for example is something that seems obvious, but surprisingly few companies actually make happen."


  • Frame OCLV Mountain Carbon main frame, alloy stays, ABP, Removable Integrated Battery (RIB), EVO link, tapered head tube, Knock Block, internal derailleur & dropper post routing, G2 Geometry, Boost148, 150mm travel
  • Fork Fox Factory 36 Float, GRIP2 damper, tapered steerer, Boost110, G2 Geometry w/51mm offset, e-bike optimized, 160mm travel
  • Shock RockShox Deluxe RT3, RE:aktiv 3-position damper, tuned by Trek Suspension Lab, 205x57.5 mm
  • Wheel Size 27.5"
  • Tires Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, 120tpi, aramid bead, 27.5x2.80˝
  • Chain SRAM NX Eagle
  • Crank e*thirteen TRS carbon, 15T w/chainguard
  • Shifters SRAM XX1 Eagle single-click, 12 speed
  • Brakeset Shimano Deore XT M8020 4-piston hydraulic disc
  • Handlebar Bontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise, 780mm width
  • Saddle Bontrager Arvada Pro, carbon rails
  • Seatpost Bontrager Line, internal routing, 31.6mm, 15.5: 100mm, 17.5 & 18.5: 125mm, 19.5 & 21.5: 150mm
  • Stem Bontrager Line Pro, Knock Block, 35mm clamp, 0 degree
  • Grips Bontrager XR Trail Comp, nylon lock-on
  • Headset Knock Block Integrated, sealed cartridge bearing, 1-1/8˝ top, 1.5˝ bottom

Q: Where to buy a 2019 Trek Powerfly LT 9.9 Plus?

The 2019 Trek Powerfly LT 9.9 Plus may be purchased directly from Trek .

Q: How much does a 2019 Trek Powerfly LT 9.9 Plus weigh?

A 2019 Trek Powerfly LT 9.9 Plus weights M - 22.77 kg / 50.2 lbs (with tubes).

Q: What size wheels does the 2019 Trek Powerfly LT 9.9 Plus have?

The 2019 Trek Powerfly LT 9.9 Plus has 27.5" wheels.

Q: What size 2019 Trek Powerfly LT 9.9 Plus should I get?

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2019 Trek Powerfly 7 LT Review


2019 Trek Powerfly 7 LT Review

Technical Specs & Ratings

Ebike systems, accessories, more details, local shops that carry, official shop for, online shops that carry, video reviews, written reviews.

EBR charges a service fee to manufacturers to produce ebike reviews and videos, this began in 2018. It’s the same flat fee for each bike, and it helps us to keep the site going while limiting ad clutter. We appreciate the opportunity to serve you with our opinions and data but respect your right to know that we receive compensation :)

The Trek Powerfly electric mountain bike models have been completely redesigned and updated for 2019, and EBR was invited to attend a launch event at Mammoth Mountain resort in California to check them out for this review. I brought my friend Brandy, who is a beginner mountain biker, and we spent the day hearing about updates and then going for rides (up and down the lower sections of the mountain). Mammoth sits at roughly 11,000 feet (3,352 meters) elevation above sea level, and there was a small forest fire burning nearby during our visit… so it was awesome to have electric assist, to make it easier to breathe. Summertime is beautiful in the Inyo National Forest, Mammoth is a lava dome volcano and the terrain is really unique and varied (featuring soft volcanic pumice in some areas and steep jagged rock in others). We got to interview one of the Mammoth staff and learn about the resort’s rich history of innovation… and there was a little celebration happening because the mountain has become one of the first in the US to officially allow Class 1 electric bicycles on national forest land. Anyway, it was pretty warm in the afternoons and I’m certain that we couldn’t have ridden as far or stayed as cool and comfortable on traditional mountain bikes. It certainly wouldn’t have been as much fun for the two of us to ride at a similar pace together. I’d consider myself an intermediate mountain biker, but I have an injured left knee and have become a big fan of e-bikes as a way to keep up with advanced riders and just go further.

All of the Powerfly electric bike models from from Trek share the same Bosch PowerTube 500 battery and Performance Line CX motor. They range from affordable hardtail models called the Powerfly 5 and Powerfly 5 Women’s (which has a slightly lower, sloped top tube), up to the Powerfly 5 FS (full suspension), the Powerfly 7 FS, the Powerfly 7 LT (long travel) which was the focus of this review, and the Powerfly 9.7 LT (a carbon fiber long travel version). If I were purchasing one of these models for myself, I’d probably go with the 7 FS because I don’t need the longer travel suspension for aggressive downhill riding and prefer the all-black color scheme on that model, which hides the black motor casing. If money were no object, the Powerfly 9.7 LT would be nice because Trek was able to tilt the motor a bit for a nicer looking integration and carbon fiber tends to reduce jitter and weigh a bit less. The 7 LT came in around 52.3 lbs (23.7 kg) which is about average for bigger suspension, thru axles, plus sized tires, and the PowerTube 500 battery (which weighs more than the older external PowerPack plastic batteries). In recent years, I discovered that Trek created the wider Boost axle and bottom bracket standard. This allows for a stronger spoke bracing angle which supports plus sized tires (2.6″ to 3.0″ width). You can see that on these bikes, and I was told that the Q Factor is 190 mm and that the frame was made a bit long to help keep the front wheel down on steep descents. Despite this, I managed to lift the front wheel on a couple of occasions during our ride test. Trek has another innovation in store for people who are willing to spend some time unscrewing bolts… the seat stays can be made slightly longer or shorter by flipping this washer called a Mino Link which changes the fork angle by about one percent. I haven’t seen this on any other electric mountain bikes. Same goes for the Lock Block headset, designed to stop the crown from bashing into the downtube in the event of a crash. Other frames utilize curved downtubes that aren’t as stiff. The rear suspension design uses a rocker link and vertical shock position to keep as much weight directly below the rider (at the center of the frame) as possible. Older Trek models had a floating pivot design but I was told that they have moved towards direct frame mount in an effort to stiffen the chain stays and bottom bracket. The rear wheel mounts to a pivot point and benefits from an Active Braking Pivot (ABP) design meant to isolate suspension movement from braking, to keep your rear wheel in contact with the ground and reduce stiffening and brake squat. Lots of fancy proprietary engineering happening here. As a more casual rider, I was drawn to the clean internally routed cables, tight motor casing with clever molded chain guide and alloy skid plate (with bottle opener), double-sided slap guard and chain suck protector wedge, and powerful 203 mm hydraulic disc brakes with quad piston calipers. As someone who frequently rides with just one hand on the bar (because I’m filming), it’s nice to have good brakes. For whatever reason, the brakes were squeaking a bit during my rides, and that could be due to some hand oils on the rotors from transport, assembly, and demos. It was great to work with the Trek team to be fit to the frame properly and then have the suspension sagged to my body weight. Both air shocks have black anodized coatings to minimize stiction, offer rebound, and compression adjust… they felt great. With five frame sizes available for each of the Powerfly models coming to the US, and a vast network of dealers, you’ll be able to find a great fit and get set up properly like we were.

Driving the bike is a planetary geared mid-motor that’s rated 250 watts nominal and 600 watts peak. Depending on the market you’re in, the top speed may be 32 km/h (20 mph) or 25 km/h (15.5 mph) to comply with local regulations. It’s a Class 1 product, meaning that it utilizes pedal assist only and is allowed on the widest number of trails (including at Mammoth). With a peak torque rating of 75 Newton meters, it’s one of the most powerful centerdrive electric bike drive systems on the market, but it’s also one of the loudest. If you’re riding on gravel trails or through the woods, the high pitched motor sound is mostly masked by tire contact. What’s so impressive about this system is that it responds to rear wheel speed, pedal cadence, and pedal torque over 1,000 times per second and incorporates software driven shift detection. Bosch is well known for their motor controller system and the Performance Line CX motor offers an eMTB mode that was developed in tandem with professional mountain bike riders. The motor itself weighs a bit more than some of the competition at roughly 8.8 lbs. There’s definitely room for improvement here, but Bosch has earned a reputation for quality and reliability. They were one of the first big companies to enter the US with brands like Haibike and have faithfully served the North American market longer than Brose, Shimano, Yamaha, and most others. What you trade in millimeters and grams is made back through reliability and leading performance. Perhaps my favorite part about this motor, and a feature that is especially relevant to electric mountain biking applications, is the higher pedal RPM support. Basically, you can pedal fast in a high gear and the motor will continue supporting you at up to 120 pedal strokes per minute. I tried to demonstrate this in the video review above… Some other motor systems cut out at 100, 110, or begin to fade near 120. This motor can handle steep climbs but also supports faster spinning on cross country sections. It empowers you as a rider vs. forcing you to adapt to electric assist. I also appreciate the walk mode feature that was working on the latest batch of Powerfly ebikes. This is a feature that most earlier (pre-2018) Trek models had disabled, but it comes in very handy for those moments when the terrain is too difficult to ascend or you’ve got a flat. The 11-speed Shimano Deore XT drivetrain empowers the Bosch mid-drive to climb and can easily pedal the bike beyond the top assisted speed. You’ve got an 11-46 tooth cassette and a proprietary 15-tooth (38 tooth equivalent) chainring to work with. The motor utilizes a reduction gearing system to spin the 15 tooth cog 2.5 times per single crank revolution and this causes a bit of mechanical drag that eats into efficiency when the bike is unpowered or pedaled beyond the top assisted speed. Some benefits might be faster starts and stops along with excellent chain retention… but the chain is also positioned very near the chain stay, so there’s more contact happening as you ride over bumps. Thankfully, the Deore XT derailleur does come with a one-way clutch system, a little grey lever that can be clicked into the up position to tighten the derailleur spring and reduce bounce. Position it in the forward position for easier wheel maintenance.

One of the most exciting new design features that Trek has introduced for their 2019 mountain models is the Bosch PowerTube 500 battery integration. In the past, Trek has done a great job of matching and smoothing the external plastic PowerPack battery… insetting the packs and even using plastic covers for protection and aesthetic enhancement, but it still stuck up above the downtube and stood out. It limited space for adding bottle cage bosses and other accessories in the main triangle of the frame. The PowerTube, by contrast, is completely hidden inside the downtube and it stays out of the way completely. The battery bay is wide open when the pack is removed and this actually makes it easier for shops to adjust shifter, brake, electrical, and seat post dropper cables. The battery pack is encased in an aluminum alloy shell and has a second layer of alloy protective covering screwed onto the right side, painted to match the downtube design of each specific model. We were told that the shield does not add to the structural integrity of the frame (and for the carbon fiber 9.7 model it is still aluminum alloy) so it definitely adds some weight. In addition to the shield, there’s also a plastic top cap with flip-up handle. This is a welcome feature because it makes removing and transporting the $900+ battery much easier and safer. You first have to unlock the pack from the left side of the frame and then it pops out about halfway before you can press a lever on top (where the handle is) and pull it the rest of the way out. This two-step approach is also very nice for safety, but it only works on the way out… When you’re mounting the pack, you actually have to insert the key and twist it on the left side of the frame while trying to balance and push the battery pack from the right. I wish the halfway step did not require a key so that the process of balancing everything could be less precarious. I asked about this and was told that Trek wanted to make the locking mechanism secure and reduce rattling, so this is why the key must be turned. Anyway, I do appreciate the thought that went into putting the battery door on the left side of the frame vs. the bottom (where the pack could drop out easier on removal due to gravity), the top (where the pack could collide with the top tube from below), or the right (which would encourage riders to lay their bikes down on the more delicate drivetrain side). But still, the key port is on the left, so if you do lay the bike down it could be a challenge to reach under and twist. The charging port is also on the left side of the frame, directly in the path of the left crank arm. The Bosch plug interface is a wider proprietary design that seems sturdy, but it’s still worth being careful not to snag. There’s a little plastic door protecting the charging port and this is a nice upgrade from the stand-alone rubber plugs I see on some other models that could get lost when they don’t have leashes. I do recommend being delicate and thoughtful when laying the bike down on the left side because the larger 203 mm disc brake rotors could get bent easily (especially in off-road environments with sticks and rocks strewn about). Amazingly, the left chain stay has a 20 mm threaded tab for adding a kickstand! So, if you’re buying an all mountain electric bike and want to ride it around with a jittering stand, you can do that! Or, you could ride it around an urban environment and take on curbs, grassy hills, and pretty much anything else, and still stand it up straight in your garage and at the bike rack. Nice one, Trek :D Just like the older Powerpack batteries, the new PowerTube can be charged on or off the frame, and Bosch continues to lead with their compact, lightweight, faster 4-amp charger. I’d definitely remove the ~7.4 lb battery before lifting the bike for service or mounting it to my car rack. The battery has a little LED indicator on the base (where you plug it in) that communicates a rough estimate of fill level. To maximize lifespan, keep the battery charged over 20% as frequently as possible and avoid extreme heat and cold. The PowerTube is longer than the older PowerPack, it’s less universal because of the proprietary covering that each company is making for themselves, and it’s less available to travelers (or between bikes in the same family due to the covers). Sure, you could borrow a different colored battery for a long trip if you and a friend both have Trek ebikes, but imagine trying to stick this thing into a backpack or pannier bag. It’s just not as compact or convenient as the PowerPack… So I kind of miss that from the older Powerfly models, which still looked great. The 36 volt 13.4 amp hour size is about average for this generation of ebikes, and the lithium-ion cells are above average in terms of quality and warranty support. I really like and trust Bosch, but compared to the custom 36 volt 17.5 amp hour packs for some Brose powered ebikes that actually weigh less, it leaves something to be desired.

Activating the electric systems on this bike is fairly straightforward. You charge and mount the battery then press the power button on the top edge of the little display panel, which is mounted within reach of the left grip. This is the Bosch Purion display panel , one of the nicer compact offerings on the market right now. It cannot be swiveled to reduce glare easily, is not removable for protection, does not show as many menus (missing Clock, Max Speed, Average Speed, Trip Time, Shift Recommendation), and does not have an active Micro-USB charging port like the larger Bosch Intuvia display . However, it keeps the handlebars clean and may not get damaged as easily in the event of a tip. This is a very popular display panel for electric mountain bikes, which often strive to go “below the radar” and limit fancy accessories that could get broken or attract unwanted attention. I have grown to accept it but have a few tips for use… the + and – button pads that raise or lower power for assistance click in at an angle towards the right. They are attached near the left edge of the control pad and pivot in towards the LCD. The right edge is their sweet spot, sometimes even the middle can be difficult to click in or just inconsistent. The screen itself glows faintly in white at all times, which shouldn’t draw much power, and is handy when it’s early morning or later at night and you need to read it. Once you get the hang of things, you really don’t have to look down at all because you can notice the clicks of the button pad and feel the boost in power. Furthermore, if you set the drive mode to eMTB (which is third up from the bottom: Eco, Tour, eMTB, Turbo), you might not want to click at all because the mode is so dynamic and good. Holding the + button will turn a lights icon on and off but since the Powerfly models don’t come with lights (at least not in the USA), this doesn’t really do anything. Some dealers may be able to wire in lights for you at an extra charge, and this could be really cool for people who enjoy moonlight rides and want to take advantage of the high capacity battery onboard. Holding the – button will cycle through trip distance, odometer, assist level, and range. This range section is dynamic, so you can see the bike calculate how far it thinks you can go based on the last mile of riding, your current state of charge, and the chosen level of assist. On the lower edge of the control pad, mirroring the power button, is a walk-mode button. When you’re in any of the four levels of assist (not Off) press walk-mode once and then hold the + button to have the motor slowly assist you when walking the bike, as mentioned earlier.

This review video and writeup was longer than normal because I wanted to provide some guidance for the entire lineup. Trek is a leader in the cycling space, one of the top three manufacturers globally (Trek, Giant, Specialized), and their electric bicycles are some of my favorites. Trek didn’t pay me to say that and I didn’t get paid for this review… but they did provide a really cool experience for my friend and me. The past six years of my life have been dedicated to electric bikes, ever since I got a knee injury and wanted to keep commuting to work daily. My preference is full suspension mountain bikes because I also have neck and back injuries… and I love the new plus sized tires that provide increased float, traction, comfort, and reduce deflection on big rocks. It’s neat to see a few different levels of bikes, a women’s specific model with slightly lower standover height, and the carbon frame option. I was riding the 17.5″ frame and probably would have been better off on the 18.5″ because I’ve got such long legs. The Trek rep named Ross told me that they were targeting more options for the mainstream “middle of the bell curve” and that makes a lot of sense. It’s nice to have a dropper post, fully adjustable suspension, and a frame that is well-balanced front to back. the drive systems are positioned well and perform incredibly, but do produce some extra noise compared to some competitors. For those who are new to the 650B tire size utilized here, it provides the rolling momentum and lower attack angle of 29ers with increased width for traction. It makes perfect sense for an electric bike because the added weight and drag of the tires are offset by the highly efficient motor. The Bontrager tires that come with this model have reinforced sidewalls to handle lower pressure (increased tire flex) and the tires and rims come tubeless-ready for easy conversion. You’ll get less pinch flats, save ~200 grams total, and get fewer flats because of the self-sealing nature of tubeless sealant. As always, I welcome questions and feedback in the comments below, I’ll do my best to answer, and you can connect directly with other owners and enthusiasts in the Trek electric bike forums .

  • The Powerfly line of electric bikes from Trek all share the same battery and motor integration, this keeps costs lower and makes fixes easier, I was amazed that all six of the models being introduced to the North American market for 2019 (Powerfly 5, Powerfly 5 Women’s, Powerfly 7 FS, Powerfly 7 LT, Powerfly 9.7 LT Carbon Fiber) come in five frame sizes! This ensures optimal fit
  • There are actually two “medium” frame sizes to choose from, I rode the 17.5″ but would have preferred the 18.5″ which is slightly larger (since I have longer legs), Trek really focused on the “fat part of the bell curve” with their sizes to serve most common use cases well by having two mediums
  • Trek only sells through dealers at this point, and this strategy allows them to provide the best quality control, assembly, and fitting… but they are also one of the three largest bicycle brands in the world, so their prices aren’t as high as some competitors, it’s the best of both worlds
  • The motor is protected from rock and log strikes by a long alloy skid plate, it’s vented to improve cooling and the large vent hole in the center is shaped into a bottle opener… which is fun, I really appreciate the plastic casing design on the right side of the motor as well, this doubles as a chain protector and guide, it’s even designed to help clear mud and prevent chain suck
  • Excellent use of slap guards, there’s a long rubber strip on the top and bottom portions of the right chain stay, this will keep the paint job in tact and reduce noise on rough sections of trail
  • The smaller Bosch chainring makes chain slap more common than with a standard sized chainring but the Shimano Deore XT derailleur minimizes this when you click the one-way clutch into the up position, tightening the springs to reduce chain bounce
  • Overall nice aesthetic, the paint job isn’t super busy and Trek has matched the black rims, seat post dropper, and suspension elements (including black stanchions) to the black paint accents… this is the case on all 2019 Powerfly models, I like the 7 FS best because the black motor blends with the black frame color
  • Sturdy thru-axles, Boost hub spacing, thicker 35 mm fork stanchions, a high-volume rear suspension, and frame-mounted rear suspension interface (compared to their older floating pivot) increase frame stiffness, handling, and efficiency of power transfer
  • Air suspension tends to be lighter, more adjustable, and these RockShox components have hard anodized stanchions to reduce stiction and perform better on smaller bumps, I appreciate the the proprietary rear pivot ABP design
  • The Bontrager XR4 tires are designed to be lightweight but still have reinforced sidewalls to be durable when running at low tire pressure if you decide to go tubeless, they ship tubeless ready with strips and valves included for easy conversion and that’s what the Trek reps recommended to me… I was told that plus sized tubes can run 100 grams a piece and tend to go flat more easily when running with low pressure, so it’s decent weight savings but most importantly helps you reduce pinch flats and reduce maintenance effort
  • The headset uses Knock Block to prevent oversteer and subsequent frame damage, even if you really crash hard and break the chips inside the Knock Block, the downtube has rubberized strike points for further protection
  • Internally routed cables look great and stay out of the way but are still easy to service because of the wide opening for the PowerTube battery pack
  • Internally mounted battery pack keeps weight low and centered on the frame, it stays protected inside an alloy (or carbon fiber) tubing structure with an alloy cover, Trek really thought things through and chose a right-side mount because it’s best to lay bikes down on their left side (to protect the drivetrain)
  • Another benefit to the PowerTube battery, with attached plate and handle here, is that you don’t have to worry about someone stealing/tampering with a non-locking plastic cover when the bike is at a rack, and there are just fewer parts to keep track of when you do remove the pack from the bike
  • One of the trade-offs with the Bosch PowerTube battery is that it does not come stock with a handle… Trek designed their own interface with two-step click (so it won’t flop out when you unlock it) and added a handle for secure and safe transport
  • Plenty of space below the top tube, in front of the seat tube, and on top of the downtube to mount accessories… Trek even included bottle cage bosses for all of the Powerfly models!
  • Excellent drivetrain, you get an extra wide 11-46 tooth cassette to handle All Mountain terrain… everything from climbing to descending with speed, I appreciate the durability and weight savings of a 1x drivetrain like this
  • Extra large 203 mm disc brake rotors with larger quad-piston calipers provide stopping leverage and improved cooling for those fast, long descents… sometimes I’ll see 203 front with 180 mm rear but considering the semi-downhill performance of this suspension setup and heavier ebike build (52.3 lbs total here) it’s a great hardware upgrade
  • Very nice 130 mm seat post dropper with internal cable routing, thicker 31.6 mm seat post sizing makes this part easy to swap out or upgrade
  • Trek really dialed in their rear suspension for the new line of Powerfly e-bikes, the Active Braking Pivot (ABP) rear link reduces lockup and skipping so the rear wheel can stay on the ground, the Rocker Link piece positions component mass (including the rear shock) directly below the rider for better handling, they optimized the leverage rate between the rear wheel and rear shock to provide excellent mid-stroke control for less bobbing, more stable cornering, and and better acceleration
  • Both seat stays have this “flip chip” adjustable washer called the Mino Link that allows you to change the frame geometry on the fly, when the link is extending the stays it provides quick performance for cross country quick-handling use but when you shorten the stays it slackens the head tube angle by about 1° for stable downhill riding, positioning the suspension fork to take hits more directly
  • The Bosch CX motor controller is extremely smart and consistent, it measures rear wheel speed, pedal cadence, and pedal torque over 1,000 per second while also listening for pressure changes from shifting and then easing off, this protects the drivetrain a bit from mashing
  • ABUS makes the locking core that secures the battery cover, it comes with a code for ordering additional keys or getting keyed-alike accessories such as folding locks
  • I was delighted to discover that the bike has provisions for mounting a kickstand on the left chain stay! I think it’s a 20 mm spacing with two bolts and Trek / Bontrager hardware would be compatible
  • The bike comes stock with the faster 4-amp Bosch charger that lets you spend more time riding and less time waiting, the Trek rep Travis told me that electric mountain riders tend to drain batteries faster because of all the climbing, etc. so it’s nice that the charger is also lightweight at ~1.7 lbs and very compact, the Bosch charger is one of my favorites
  • The display is compact, it won’t get damaged as easily in the event of a crash but is still fairly readable with large readouts, for such a stealthy electric bike with integrated battery, the Purion display matches the understated look
  • Trek is now enabling walk mode on their electric bikes! This is especially useful if you encounter a technical bit of trail that you aren’t comfortable riding or maybe you get a flat tire, considering that the bike weighs ~52 lbs, it’s nice to get help moving it
  • I really like the eMTB drive mode, it was designed by Bosch with help from professional mountain bikers who dialed it in so the power isn’t overwhelming but also doesn’t let you down… it’s a great “all around” assist level to use so you can focus on shifting gears, it’s especially nice to have with the Bosch Purion display panel because I have found that the buttons aren’t as consistent (press near the right edge, near the LCD display, because they pivot in vs. going straight down)
  • Another feature of the Bosch Performance Line motors that I really appreciate is how they can support higher pedal rates without fading out, you can reach 120 RPM (pedal strokes per minute) and the motor is still there for you, this means you don’t have to shift gears as frequently if you prefer to spin instead
  • The quick release wheels and removable battery pack make this an easy bike to lift, transport, service on the trail, and park securely
  • Trek invented Boost technology for wider, stiffer axles to support 29er wheels and now the 27.5″ plus sized tire setup with a wider bracing angle on the spokes, I love the knock-block stem, headset top cap, spacers and frame chip and rubber hartzell hug impact-absorbing downtube bumper backup protection system (to prevent oversteer into the straight shot downtube which could damage the fork and frame), by making the downtube straight they reduced the strength to weight ratio and improved stiffness
  • Excellent two year warranty covers everything on the bike, including the motor, battery and display system, and with a vast network of dealers out there, it requires less effort to get help
  • I appreciate the aesthetic that some ebike companies have been able to achieve by tilting the Bosch CX motor up and melding it into the frame, you can see this with the BULLS SIX50 EVO AM 4 and even Trek’s own Powerfly 9.7 LT Carbon which both use the Bosch PowerTube 500
  • As nice as the battery cover looks, and as useful as the handle mechanism at the top of the pack is, this battery pack weighs significantly more than the same-capacity PowerPack 500 which mounted on top of the downtube (as seen with this 2017 Trek Powerfly 8 FS model), the benefits of the PowerTube are lower weight position, nicer look, ability to mount bottle cage and other accessories in main triangle
  • The Bosch Performance Line motors are heavier and larger than the Brose S, Shimano E8000, and Yamaha PW-X while also having a wider minimum Q-Factor, but that’s less of an issue on this Boost frame because it’s setup with a 190 mm Q-Factor to reduce shoe strikes on the stays
  • The motor produces more noise than some competing products and uses a reduction gearing system to spin the proprietary chainring 2.5x for each crank revolution, this introduces a bit of drag when pedaling unassisted or beyond the 20 mph top speed
  • Minor complaint here, in order to mount the battery pack into the downtube bay, you actually have to insert and twist the key, you can’t just slam it in and have it click into place like some competing designs… this makes it sturdier and probably reduces rattling but also requires more time and energy to do, to go even further with this complaint, I wish that the first half-step could initiate without having to insert the key, just to keep the pack from tipping out if your hands are full and you’re struggling to balance the bike and insert the key… since the key inserts into the left side of the frame, that could be tricky to reach and do if the bike is actually on its side or leaning close to a tree
  • Standard chainring teeth vs. narrow-wide for increased grab, no chain pulley to raise the chain and reduce kickback (though I did not experience any), the molded chain guide should prevent drops and chain suck
  • Apparently most Trek mountain bikes do not come with pedals, it’s a minor gripe, you’ll have to pick up some aftermarket (I brought my own lightweight magnesium Wellgo pedals for this event)
  • The Purion display panel looks good and gets the job done, but it isn’t removable and doesn’t have a functional Micro-USB port like the older Intuvia display … I’ve heard that some ebike dealers will upgrade the display for you if you’re willing to pay, not sure if Trek will do this?

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trek powerfly carbon

Nathan Pennington Running in The Distance

Trek Powerfly 4 Review and Benefits

Seeking to mix up your training routine and interested in the trek powerfly 4 ? Running is great but sometimes cycling is a great alternative to training. Welcome to RunDreamAchieve. Be sure to subscribe to the RunDreamAchieve YouTube channel . My aim is to produce at least 2 new videos there each week to help athletes like you succeed.

For an affordable Trek electric mountain bike with durable parts, look no further than the Powerfly 4. It is one of Trek's most affordable models. In addition, boasts components that give it the look and feel of a more expensive model at lower costs.

This hardtail bicycle features a Bosch motor, 500Wh battery and Purion controller from Bosch. Thus, making it an economical option for adventurers on a budget.

Trek Reviews

The Trek Powerfly 4 is an impressive electric mountain bike designed to help you explore new terrain. It boasts quality components like its smooth Shimano drive train and powerful Bosch motor, built for long-lasting performance.

The Powerfly 4 comes equipped with our user-friendly Removable Integrated Battery (RIB) system. Thus, allowing you to easily remove the battery and recharge it whenever you need. Riders rave about its agile handling in both road and trail conditions.

Testers were delighted with the Powerfly's Bosch Performance CX 250 drive unit, offering plenty of torque on climbs. They also took pleasure in popping wheelies while ascending hills.

The Powerfly's aluminum frame comes in XS, S, M and L sizes; with 27.5” wheels for smaller frames and 29” wheels for larger ones.

What is the Range of a Trek Powerfly 4?

Powerfly 4 riders have reported amazing range, often reporting being able to go on multiple day excursions. Also, with only one charge of its long-range battery.

The Powerfly 4 boasts an aluminum frame that covers a battery that's lightweight and rechargeable. Also, features the Bosch Performance CX motor with 250W and 85Nm output (that's plenty of torque). Furthermore, it comes equipped with the top-of-the-line high-powered smart battery charger capable of handling even large batteries on the market.

Are you searching for an electric bike that will do the job? There are a few models in your price range worth considering. Some even feature battery-powered lights to illuminate trails at night.

Can A ebike Go 60 MPH?

Trek's electric bike lineup has seen huge success in Europe, and now they're bringing that energy to the United States. The Powerfly 4 comes in both hardtail and full suspension versions, powered by Bosch's Performance CX drivetrain.

How far your electric bike can go depends on several factors, including its battery. The higher its watt hour (Wh), the more energy it can supply to your pedals.

To maximize the life of your electric bike's battery, be sure to charge it after each ride. Also, avoid depleting it too quickly. Nate Bosscher, senior engineer for electric bicycles at Trek, recommends that you avoid placing too much strain on the motor by pedaling too quickly – 70 to 90 revolutions per minute is ideal.

The Powerfly 4 is an excellent option for anyone interested in investing in an electric bike, as it will save you money on gas over time. But before buying anything new, be sure to research your state's regulations and determine whether investing is worth the cost.

How heavy is a Trek Powerfly 4?

The Trek Powerfly 4 is an impressive electric mountain bike designed for rough terrain and steep climbs. It boasts a Bosch e-MTB drive system and durable mountain bike components designed for trail use. Furthermore, Trek has included their user-friendly Removable Integrated Battery (RIB) system which completely encases the battery within its frame without needing tools for removal.

Trek's Powerfly 4 is part of a line of hardtail electric bikes powered by Bosch Performance CX motor and battery, available in various price points. From budget-conscious hardtail frames to full suspension models and even carbon fiber long travel models, there's something for everyone in this lineup.

The Powerfly 4 offers plenty of great features, but it lacks some of the more expensive counterparts' sophistication. For instance, its Purion display isn't removable and lacks a Micro-USB port like older Intuvia displays did. Furthermore, transporting this model may be trickier since plastic PowerPack batteries cannot fit in most pannier bags or backpacks like older versions do.

How Fast Can the Trek Powerfly 4 Go?

The Trek Powerfly 4 can go a long way on one charge, though it may be somewhat of a power guzzler. It features the Bosch Power CX 250W motor with 85Nm of torque for top speeds up to 20mph or 32km/h. Furthermore, this electric bike sports an attractive frame, battery tray and pedal system for added visual interest.

Aside from its top-notch components, what truly sets this bike apart is how much fun it is to ride. Not only does it look amazing on paper, but it's one of the most reliable and safest ebikes on the market – making it an ideal choice for families seeking an affordable way to get outdoors. Plus, with such a reliable device in your hands, you won't regret taking it out on errands!

Trek Powerfly 4 2023

The Trek Powerfly 4 is an ideal electric mountain bike for riders seeking a powerful vehicle to tackle hills. It boasts a powerful Bosch Performance CX motor, sturdy mountain bike components and Trek's Removable Integrated Battery (RIB) system which fully encases the battery within its frame so there are no tools required to take it out.

It's also a versatile machine that can handle rough terrain. With its long stays and 2.8″ tires, you'll have no trouble ascending steep hillsides so you'll be prepared for your next hill climbing expedition.

On the downside, though, it doesn't handle well in tight switchbacks where an e-bike's weight can be an issue. Furthermore, its 475mm stays prove slugglish when traversing technical rock gardens or bumpy sections of trail where rocks may gobble up your energy and leave you feeling bouncy and unsettled.

Thankfully, the Trek Powerfly 4's Bosch Performance CX motor offers 85Nm of torque – giving you plenty of power to tackle trails with confidence. In fact, this e-bike was one of our test's most powerful models.

Is the Trek Powerfly 4 Worth It?

No matter if you're just starting out or an experienced rider looking for an upgrade, the Trek Powerfly 4 is a great choice. It features an efficient Bosch Performance CX motor, user-friendly Removable Integrated Battery (RIB) system, and high-end components that will last the test of time.

The Powerfly 4 offers excellent value at its price point; it's the most budget-friendly e-bike we've tested yet still delivers impressive performance.

To determine if the Trek Powerfly 4 is worth it, we've conducted extensive research – from its battery life to power output – in order to determine if this bike is worth your money.

When selecting an electric bike, performance and quality should always be taken into account. This is especially relevant when the bike is intended to be used outdoors since a poorly performing electric bike could leave you stranded without transportation if the battery dies before you finish your journey. The most successful e-bikes provide a smooth ride, have enough battery capacity to get you where you need to go, and look good doing so.

Trek Powerfly 4 625

The Trek Powerfly 4 625 is an excellent entry-level option for electric mountain biking enthusiasts. It boasts a powerful Bosch motor and robust mountain bike components designed to withstand rough terrain. Furthermore, Trek's Removable Integrated Battery (RIB) system provides user-friendliness by fully encaseing the battery within its frame without needing tools to remove it.

This hardtail ebike is suitable for both novices and experts alike, as it can be used on casual cruises, sightseeing excursions or long gravel and forest path rides. Thanks to its efficient suspension system and intuitive handling, even in challenging terrain you'll have no trouble controlling it.

This model features an aluminium frame that fully encases a 625 Wh battery for stylish looks and protection on the trail, as well as a Bosch Performance CX motor that assists up to 20 mph (25 km/h), a Bosch smart system LED remote and wireless Intuvia display, along with Shimano XT 1×12 drivetrain. With Smart Wheel Sizing, riders of all sizes can get an optimal fit – 29 wheels on larger frames; 27.5 wheels on smaller ones.

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Is Trek Powerfly 5 A Good Bike? [Trek Powerfly 5 Review]

Table of Contents

Trek Powerfly 5

  • Price: $4,199
  • Frame: Alpha Platinum Aluminum
  • Tires: 29×2.60″ 27.5×2.8″

What we love about it: The perfect pairing of the high-end Bosch e-MTB drive system with durable mountain bike components, it can accompany you on any trail.

What we don’t like about it: it’s too heavy and gets in the way when carrying it around.

Rating: (4.8/5)

2020 Trek Powerfly 5


When fans asked for a review of the 2020 Trek Powerfly 5, as someone who likes pure mountain bikes, I had little interest in the Trek Powerfly 5 off-road e-bike. But I was stunned when I saw its sturdy body, which is really a rare heavyweight in my review.

To be honest, when I saw it, I thought of technical climbs and less-populated trails, and I changed my mind and wanted to review such a bike. We can see the Trek Powerfly 5 with a premium Alpha Platinum Aluminum frame, a wide-range SRAM SX Eagle 1×12 drivetrain, versatile Bontrager XR3 Comp29x2.30″ tires, and a high-end Bosch Performance CX motor, we were blown away by the Trek Powerfly 5’s performance on technical climbs and thrilling descents.

Over four months of our review, the car accompanied me on challenging trails like Whistler Mountain Bike Park, traversing about 40 miles of desert terrain. Not only did I feel the car’s superior climbing performance and athletic ability on loose terrain, it also gave me an intuitive adrenaline rush.

Really awesome. It’s that free-spirited climb, like blending in with the trail, really got me hooked on the 2020 Trek Powerfly 5.

Below we break down the climbing and descending performance of the Trek Powerfly 5 as well as general ride, key features, components and specs, and other versions in the range.

If you want to know more, you can refer to our detailed explanation.

Learn more: Trek Procaliber 9.8 SL Review-How Does It Stand Out In Enduro Racing?

Trek Powerfly 7 Review – High-End Battery

Trek Powerfly 5 - Trek Black/Viper Red

In my experience, in general, full-suspension mountain bikes are better at climbing, and with the front and rear shocks, the damping effect will be good, making the ride more comfortable. The car’s climbing comfort probably can’t match it. Yet on this technically difficult climb, the Trek Powerfly 5 excels at the same price as a full-suspension bike or XC.

The Trek Powerfly 5 came across as bulky due to its bulky body. The Powerfly 5 weighs 50.70 lbs (with tubes), which is unwieldy for me. I can’t imagine how I’d be able to get up there without starting a climbing ride. But actual riding gave me the answer.

On a trail like this one at Whistler Mountain Bike Park, I started doing climbing reviews. The climbing trail has plenty of sharp rocks and mounds that bulge upwards.

But I have no fear with the Trek Powerfly 5. Its SRAM SX Eagle 1×12 drivetrain, high-end Performance Line CX motor, and RockShox Recon Silver RL 120mm fork travel allowed me to reach unimaginable speeds when climbing, which is better than XC at the same price.

Also, we did rides on steep trails after the rain, but the results were not as good as we thought. Some people feel that the 29×2.60″ tires are a little floating, which may be a hindrance for beginners, but I have no obvious feeling, and even I think the driving force of the tires is very fast, and it can follow the trails tightly.

Overall, I think the Trek Powerfly 5 has a lot of power on the climbs, and its high-end Performance Line CX motor gives me enough power that it makes me enjoy climbing more.

 Trek Powerfly 5 - Solid Charcoal/Volt

I like the sprint on the descent, but I also value safety. The Powerfly 5 excels on the climbs, but I’m concerned that the weight of its body will introduce too much inertia when descending and it will hinder the descent. “everything is possible”.

The Powerfly 5 also exceeded my expectations on the descending. The Powerfly 5’s Bontrager XR3 Comp 29×2.30″ tires provide plenty of traction, and the prominent tread pattern adds to the tire’s grip.

Its RockShox fork and Solo air spring play a big part in the descent. The 120mm-travel RockShox fork encountered cliff-like jumps during the descent, and it provided responsive cushioning that allowed me to dampen vibrations even when I jumped from high places.

The air spring is more labor-saving and convenient while reducing weight. Not to mention, the power provided by the Performance Line CX motor and the braking of the Tektro HD-M275 hydraulic disc.

When I challenged the descending trail with the Powerfly 5, the ground was slippery due to the accumulation of water on the ground, and the fallen leaves created unforeseen obstacles.

In fact, the speed performance of the Trek Powerfly 5 is not as good as before, but its stability is on full display here. I think stability is a measure of bike quality in situations like this, and the Trek Powerfly 5 gives me a sense of security.

All in all, the Trek Powerfly 5 is good enough for me in both climbing challenges and descending performance, and the price is reasonable.

General Riding

My cycling started with my family. My father was an amateur cyclist and he had many beneficial influences on my riding.

I know he has a Powerfly 5, but I really never paid much attention to it. When my dad learned that I was reviewing the Powerfly 5, I had a rare family time with my dad after a long time, and discovered how important the Powerfly 5 is to my dad and why he loves the 2020 Powerfly 5 reasons.

I still had a little leg problem due to hard work when I was young, and my cycling dad couldn’t go on long rides. The drive provided by the Powerfly 5’s Performance Line CX motor solves that problem.

The Powerfly 5 was there for my dad, whether it was for the usual bodybuilding, commuting, or even climbing the slightest incline.

The versatility of the Powerfly 5 was exceptional with my dad, and I seem to have felt the designer’s deepest mind here. The Powerfly 5 is not only our best friend, but also a great companion for those who love to ride, but can’t ride very far.

If your family loves the Powerfly 5 too, take them to experience the Powerfly 5.

Main Feature

Trek powerfly 5 frame.

Trek Powerfly 5 Frame easily removable battery

The Trek Powerfly 5 has an Alpha Platinum Aluminum frame with an overall weight of 50.70 lbs (with tubes), but I wouldn’t think it’s a frame issue, since aluminum is light and strong. We can notice that the Powerfly 5 doesn’t have a single superfluous line as a whole, thanks to Control Freak’s clean internal routing.

In addition, the removable integrated battery (RIB) also brings us enough driving force and convenience. Not only that, the proper frame space makes my ride more comfortable, and the two water bottle mounting holes make it easy for me to carry enough water.

Even when riding in harsh conditions, I think the Powerfly 5 is a reliable enough comrade-in-arms.

The ride comfort of the Trek Powerfly 5 I think has a lot to do with geometry. The body-friendly geometry not only makes it look balanced and beautiful but also enhances rider comfort.

The 2020 Trek Powerfly 5’s steep seat tube angle (LG 71.7°) allows the rider to maintain a comfortable upright ride while increasing pedalling efficiency. Its slack head angle (LG 67.7°), while perhaps making the bike’s steering less responsive than the tight head angle, made it easier for me to descend.

Plus, the Powerfly 5 has the right chainstay length (45.5mm) to stay stable on the descents and help on the climbs. Powerfly 5 Proper Reach (LG 42.7cm) allows you to achieve a good balance between the front of your body and your arms without your arms getting sore.

However, if you ride on bumpy terrain for a long time, it will still make your arms feel tired. The comfy Powerfly 5, at this price point I think it’s an A.

If you value not just performance but comfort, you can try the Trek Powerfly 5.

Components and Specifications

Sram sx eagle 1×12 speed.

SRAM SX Eagle 1×12 Speed

As we all know, SRAM has almost taken the shifting system of mountain bikes by storm with the Eagle series of 12-speed groupsets in recent years. Almost every mountain bike I’ve seen with a 12-speed is using SRAM.

The SX Eagle 1×12 speed we saw used in the 2020 Powerfly 5, some thought it might not be as good as the NX. The SX doesn’t cost much, and in my riding experience, it’s smooth and responsive too quickly.

In addition, the 12-speed range is sufficient for climbing or commuting, and the larger gear ratio range of 11-50t allows you to quickly change to the appropriate gear in different situations.

The only thing I feel like a bit of a complaint about the shifting system is that it’s a little heavy, wish it could have been replaced with lighter and better gears.

Tektro HD-M275 Hydraulic Disc Brake

I prefer Shimano to the Tektro HD-M275 hydraulic disc, but that’s not to say the Tektro HD-M275 is bad. The 2020 Powerfly 5 Tektro HD-M275 hydraulic discs are lighter in weight than mechanical discs and are much gentler on braking without harshness.

While reviewing the Powerfly 5, I did a brake test. Riding on muddy and twisty country trails and going fast on the road after the rain, its braking remains extremely stable. If you like safe, stable, and smooth braking, I think you’ll be interested in the Powerfly 5.

Bontrager Commuter Comp Bicycle Saddle

The moment I sit in the seat, I feel what is called comfort. From the appearance, we can clearly see that the middle of the seat is empty, which will be very breathable. The Trek Powerfly 5’s saddle combines a full open cell with air foam and dual-density shell to give me soft comfort and support while riding.

Not only that, the material is more durable, but its cover material protects the saddle’s dual-density shell and air-foam construction, and it’s even waterproof. Provides lasting comfort no matter where you ride.

Plus, the deceptively simple integrated Blendr mount makes it easy to add Bontrager Flare taillights to your needs. Even when riding in the evening, it can be noticed by others and not bumped into people. Of course, this possibility is almost 0.

Bontrager XR Endurance Comp Grips

Trek Powerfly 5 Grips

Many people will ignore the role of the grip, we must know that we rely on the grip to control the direction. The 2020 Trek Powerfly 5’s grips are literally in the top 5 of the bikes I’ve reviewed in terms of looks and fit.

Not only does the XR Endurance Comp Lock-On Grip feature an ergonomic supportive shape for great support without sacrificing your comfort, but it also lets you go further.

Additionally, the pattern protects your palm (because of the padding) and your fingers stay in place at all times. I’ve had a bruised palm from grip issues a lot of the time on long rides, but the grips on the Trek Powerfly 5 not only alleviated that symptom, but made my rides easier.

Bosch Performance CX Motors

Bosch Performance CX Motors

The Trek Powerfly 5 isn’t your average hardtail mountain bike, it’s electric, and that’s what the Performance Line CX motor has to say. The high-end Performance Line CX motor is networked with other components on the e-bike via an intelligent system, and thanks to the eBike Flow app, I can easily keep track of the bike’s trajectory.

Some people may think how can electric motors achieve the effect of fitness? But the truth is that the Trek Powerfly 5 does improve your health (my dad is one example).

You can appreciate the convenience brought by technology, the support of intelligent systems provides better protection for you and your e-bike, and the enhanced control brings you more riding pleasure.

Trek Powerfly 5 Tires – Bontrager XR3 Comp MTB

Trek Powerfly 5 Tires

The tires of any bicycle are like the steps that carry us forward. The Trek Powerfly 5’s Bontrager XR3 Comp 29×2.30” mountain bike tires are not only for mountain trails, but their excellent traction kept us going even on steep hills.

Its versatile tread also gripped the corners firmly when I faced sharp turns. Whether it’s on a quick descent or a steady ascent, the Trek Powerfly 5’s tires are on full display.

Other Versions of Trek Powerfly 5

2019 Trek Powerfly 5

For a more comprehensive review of the 2020 Trek Powerfly 5, we also looked at the 2019 Trek Powerfly 5 and 2018 Trek Powerfly 5. After a comprehensive comparison, we found that although the 2020 Trek Powerfly 5 is a bit more expensive, its component upgrades are obvious to all.

First off, the 2018 and 2019 Trek Powerfly 5’s drivetrain is 1×10, and the 2020 Trek Powerfly 5 is 1×12, with a wider shift range without ignoring shift comfort. Second, the 2018 and 2019 Trek Powerfly 5s have Shimano brakes that I like, but they’re rudimentary Shimano brakes, and I’m a little disappointed at this price.

Finally, with the advancement of technology, the components and motors of the Trek Powerfly 5 have been upgraded. Even if the price will be a little more expensive, I am still willing to pay for the Trek Powerfly 5 from the sense of technology and applicability.

What do we like about it?

  • The speed range of 1×12 can be applied to more situations.
  • The high-end Performance Line CX motor provides plenty of assistance, allowing you to experience more riding pleasure.
  • Body-fitting geometry makes you more comfortable while riding.
  • It is one of the great gifts for your family.
  • Comfortable grips make you fall in love with riding.
  • The comfortable saddle makes me reluctant to get off.

What do we not like about it?

  • Some people may think that the body is too bulky.
  • The color selection of the car paint can be more abundant.
  • What is the frame material of the Trek Powerfly 5?

The frame of the Trek Powerfly 5 is Aluminium.

  • What is the drivetrain of the Trek Powerfly 5?

The drivetrain on the Trek Powerfly 5 is an SRAM SX Eagle, 12-speed.

  • What is the fork travel on the Trek Powerfly 5?

The Trek Powerfly 5 has 120mm of fork travel.


Comparison Chart

2020 trek powerfly 5 vs trek powerfly 7.

Trek Powerfly FS 7 Plus

We can see that the fork travel is different between the Trek Powerfly 5 and the 2017 Trek Powerfly 7. Although only a short 20mm difference, this makes a huge difference in the actual riding experience.

The 2020 Trek Powerfly 5’s 120mm fork travel has better cushioning and shock absorption. Also, the 2017 Trek Powerfly 7Shimano Deore M8000 XT 1×11 has a smaller transmission range than the Trek Powerfly 5 SRAM SX Eagle 1×12.

In actual riding, I prefer the smooth shifting of the SRAM SX Eagle 1×12 and the wide 11-50t range. I think it’s important to get the Trek Powerfly 5 for $200 more, which is more than enough for me.

Learn More: Trek Powerfly 7 Review – High-End Battery

2020 Trek Powerfly 5 vs 2021 Giant Stance E+ 2

2021 Giant Stance E+ 2

In fact, the 2021 Giant Stance E+ 2 is a full-suspension off-road electric bike with 130mm of fork travel and 120mm of rear fork travel. Like most full-suspension bikes, it’s well damped on both descents and climbs, and its slack head angle (67°) makes it easier to descend.

However, the 2021 Giant Stance E+ 2 drivetrain is a Shimano Deore, 1×10 speed, and I think its drivetrain could be improved a bit at this price. Also, its single paint color feels too little choice (although this balsamic green looks good too).

Let’s take another look at the Trek Powerfly 5, which has a 1×12-speed drivetrain with a wide range of speed options that allows me to experience the feel of different speeds. The Trek Powerfly 5 also has more paint options in three colors.

Not to mention that the Trek Powerfly 5 is $201 cheaper than the 2021 Giant Stance E+ 2. If you’re after value for money, you can try the Trek Powerfly 5.

2020 Trek Powerfly 5 vs 2022 Norco Fluid VLT A2

2022 Norco Fluid VLT A2

When I saw the price of the 2022 Norco Fluid VLT A2, I thought it would most likely be a carbon frame bike. But it’s an aluminum frame, although aluminum isn’t bad.

It is undeniable that the 2022 Norco Fluid VLT A2 is a full-suspension electric bike. It has a front fork of 140mm, a rear fork of 130mm, and a dropper post configuration, which makes the 2022 Norco Fluid VLT A2 full of shock absorption. However, the gearing of the 2022 Norco Fluid VLT A2 1×10 gave me a bit of a gripe, and I wish it could be improved.

After all, the 1×10 transmission seems a bit outdated now, of course, this is not to say that the 1×10 is bad, but at this price, I think the 2022 Norco Fluid VLT A2 can do better. As many of you who know the Trek Powerfly 5 know, it has a 1×12 transmission.

Although not much, there is still a big difference in the actual riding experience. Not only that, the charger of the 2020 Trek Powerfly 5 is a Bosch compact 2A (100-240V) charger, which allows it to supplement energy at a voltage of 100-240V so that it cannot be freely charged due to voltage limitations.

While the 2022 Norco Fluid VLT A2 is a little better than the Trek Powerfly 5 in terms of braking, the 2022 Norco Fluid VLT A2 isn’t bad either, with stable braking even in the rain. At this price, I think the Trek Powerfly 5 is adequate.

If you’re looking for a $1290 cheaper Trek Powerfly 5, I think it’s a no-brainer.

Learn more : Is 2023 Norco Fluid FS A4 Splendid? – [2023 Norco Fluid FS A4 Review]

Trek Powerfly 5 vs 2022 Transition Scout Alloy GX

trek powerfly carbon

Looking at the 2022 Transition Scout Alloy GX full suspension trail bike, we must mention its 140mm chainstays, 150mm fork travel, and its dropper post. This allows it to adapt to more rough terrain and allows for a more comfortable ride.

Not only that, but the 2022 Transition Scout Alloy GX also has a 1×12 drivetrain, and its TRP DH-R Evo brakes very smoothly. In fact, my only complaint is the high price, and I think a carbon fiber frame might make me more willing to pay for it.

Not only is the Trek Powerfly 5 $800 cheaper, but it’s also 1×12 speed. Some might think its transmission isn’t advanced enough, but in this price range, it’s adequate and I feel very stable in terms of braking.

If you’re after value for money, you can try the Trek Powerfly 5.

In case, the above comments are helpful to you, please remember to share the subscription. Have a great day!

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E-Bike Tuning

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E-Bike Tuning!

Perfect Tuning-Solutions for your E-Bike.

E-Bike Tuning 2023 – Here´s how it works:

trek powerfly carbon

Step 1: Find out the exact designation of your e-bike motor:

trek powerfly carbon

Step 2: Find and compare matching tuning products:

trek powerfly carbon

Step 3: Order and install the best tuning product:

Unlock your e-bike to extend the support of the electric motor beyond the 25 km/h limit - or even remove the limitation completely. With some tuning solutions, the electric bike can even be quickly converted back into compliance with road traffic regulations in just a few steps! Some e-bike tuning products and various special tools are exclusive available only from us. Since 2013 we offer the best support so that you can use the full power of your e-bike! Here you will find the most popular tuning products for the most popular e-bikes:

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Yamaha powerdrive, giant syncdrive, the e-bike motors overview.

Here you can find all e-bike motors where you can unlock the speed limit. For the more popular motors, there are sometimes a wide variety of solutions, while for others there are only individual options to unlock them:

trek powerfly carbon

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Many of the listed tuning brands are only available exclusively from us. Some brands offer products for many e-bike motors, while others offer solutions for only a few. In addition, we have developed our own tools. Thus, here you will find the most comprehensive overview on the subject of e-bike tuning ever. We present the best brands here:

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There is always something to be tuned!

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We explicitly point out that in Germany electric bike tuning products may only be used in private, enclosed areas – for example, for sports and advertising purposes. Electric bike tuning manipulates the speed of your pedelec / electric bike, and this is not allowed in the area of German Road Traffic Licensing Regulations (StVZO). You have to use the tuning products from our shop at your own risk. We accept no liability whatsoever for any current or future damage to objects and/or persons caused by the improper installation/installation and/or use of tuning tools from our shop. Liability, warranty and guarantee claims may be limited or completely cancelled by the use or application of the tuning, as the installation or use of the e-bike tuning results in a modification or manipulation of your e-bike. Even the installation of a larger chain ring can result in the expiry of the manufacturer´s guarantee. If your e-bike has an operating licence, it will generally expire as well. The installation and operation of a tuning product is at the user's own risk. Manufacturers and dealers accept no liability for damage associated with the use of tuning tools. Please always drive carefully, use protective clothing such as helmets or protectors and do not put yourself or others in danger. Talk to your insurance company beforehand to make sure all of your actions are protected in the best possible way. Please also bear in mind that other countries have different legal requirements. This is especially important if you are going on holiday with an e-bike. Please inform yourself in advance about the regional legislation in the country you are in and always comply with the respective legal regulations. Only ride your tuned e-bike where it is really allowed.


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  • Published: 20 May 2011

Possibilities of including the taxonomy of soils and parent materials of Moscow city into the classification system of the soils of Russia

  • I. I. Lebedeva 1 &
  • M. I. Gerasimova 1  

Eurasian Soil Science volume  44 ,  pages 572–575 ( 2011 ) Cite this article

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The analysis of the taxonomy of the soils and soil-forming rocks of Moscow city was performed in view of the compatibility of the taxonomy proposed with the new classification system of the soils of Russia. The common platform, which determines the possibility to incorporate the taxonomy of urban soils into the new classification system, is the principle of the priority of the diagnostic horizons, which provides the properties-oriented conceptual background of the compared systems. It was shown that the considered classification developments do not have any fundamental differences either in ideology or in concrete manifestations. Some contradictions in place can be eliminated by respective discussions and agreements.

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M. I. Gerasimova, M. N. Stroganova, N. V. Mozharova, and T. V. Prokofyeva, Anthropogenic Soils: Genesis, Geography, and Rehabilitation: a Text Book (Oikumena, Smolensk, 2003) [in Russian].

Google Scholar  

M. I. Gerasimova and I. I. Lebedeva, “Subtypes and Genetic Properties in the New Classification of Russian Soils: Concept, Functions, and Application,” in VII Sibirtsev Lectures, Arkhangel’sk, 2010 (Moscow, 2010), pp. 156–158 [in Russian].

M. I. Gerasimova and S. F. Khokhlov, “Classification of Soils of Russia: Discussion on the Internet Site,” Pochvovedenie, No. 12, 1449–1455 (2010) [Eur. Soil Sci. 43 (12), 1344–1350 (2010)].

L. L. Shishov, V. D. Tonkonogov, I. I. Lebedeva, and M. I. Gerasimova, Classification and Diagnostics of the Soils of Russia (Oikumena, Smolensk, 2004) [in Russian].

Field Guide to Soils (Pochv. Inst. Im. V.V. Dokuchaeva, Moscow, 2008) [in Russian].

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Original Russian Text © I.I. Lebedeva, M.I. Gerasimova, 2011, published in Pochvovedenie, 2011, No. 5, pp. 624–628.

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Lebedeva, I.I., Gerasimova, M.I. Possibilities of including the taxonomy of soils and parent materials of Moscow city into the classification system of the soils of Russia. Eurasian Soil Sc. 44 , 572–575 (2011).

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Received : 16 December 2010

Published : 20 May 2011

Issue Date : May 2011


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