It's right for you if...
You're looking for the highest-end e-MTB for the highest-end adventures. Sleek and rugged. Light and tough. Hard-working and fun. If this bike seems like a contradiction, it's because it breaks rules and demolishes boundaries—including whatever limit you've set for your riding.
The tech you get
A lightweight and trail-tough OCLV Mountain Carbon main frame that fully encases a long-range 500Wh battery for great aesthetics and protection on the trail, a Bosch Performance CX motor and Purion controller. Plus, an e-bike optimized FOX Factory 36 fork with thicker, stiffer, legs and a RE:aktiv shock, grippy 27.5+ mid-fat tires, Bontrager Line Pro 40 carbon wheels with a 108-tooth Rapid Drive hub for instant engagement, a Bontrager Line dropper post, a 1x12 SRAM XX1 Eagle drivetrain, and 4-piston hydraulic disc brakes.
The final word
No compromises. Powerfly LT 9.9 brings the highest-quality trail bike parts and a powerful Bosch pedal-assist system to a lightweight OCLV Mountain Carbon frame to make performance ride that has one purpose: to give you the greatest trail adventures ever.
favorite_borderWhy you'll love it
- Trek's Removable Integrated Battery (RIB) system looks great and is super user-friendly: it fully hides the battery in the frame for protection, makes it easy to remove the battery without tools, and lets you mount a water bottle cage—even on full suspension e-MTBs
- OCLV Mountain Carbon main frame with alloy stays make for a bike that's light and trail-tough, Longer travel suspension and 27.5+ mid-fat tires are the perfect combination for traction, stability, and capability on rough trails
- Advanced spec including e-MTB-specific parts and Trek's RE:aktiv damper take this model to the next level
- It rides like a mountain bike because it is one: it has the same frame and suspension tech we've refined in our decades-long trail heritage
"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."Read more
"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."Read more
"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."Read more
"Trek has created something special"
"Powerfly really feels at home blasting around even the most extreme trails. Rough terrain is simply swallowed up by the capable suspension. The relatively long chain stays are a huge advantage on steep sections, letting you stay seated without losing any traction. The front wheel hardly ever lifts off the ground and the central position makes it easy to pedal on technical sections and maintain your balance."Read more
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Bosch Performance CX
Bosch’s Performance CX line is made for rugged off-road use with a maximum torque of up to 75 newton meters, sustained power into the high cadence range for sporty acceleration, and a sleek mid-mount motor for ideal weight balance and obstacle clearance.
Bosch Purion Display
Bosch's Purion display features a fully-functional speedometer with a backlit display, service interval indicator, and battery range indicator. Its thoughtful design allows riders to scroll through functions or choose the right level of support while maintaining contact with handlebars.
Wider dropouts (110mm front, 148mm rear) give you the stiffness of a 27.5" wheel with all the benefits of a 29" wheel, and Boost148 in the rear lets you run wider tires and a larger chainring without affecting q-factor and pedaling efficiency.
- 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
- Fox Factory 36 Float, GRIP2 damper, tapered steerer, Boost110, G2 Geometry w/51mm offset, e-bike optimized, 160mm travel
- Rear suspension
- RockShox Deluxe RT3, RE:aktiv 3-position damper, tuned by Trek Suspension Lab, 205x57.5 mm
- Bontrager Line Pro 40 carbon, Tubeless Ready, 108T Rapid Drive, Boost110 front, Boost148 rear
- Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, 120tpi, aramid bead, 27.5x2.80˝
- SRAM XX1 Eagle single-click, 12 speed
- Rear derailleur
- SRAM XX1 Eagle, Roller Bearing Clutch
- e*thirteen TRS carbon, 15T w/chainguard
- SRAM XG-1230 Eagle, 11-50, 12 speed
- SRAM NX Eagle
- Not included
- Bontrager Arvada Pro, carbon rails
- Bontrager Line, internal routing, 31.6mm, 15.5: 100mm, 17.5 & 18.5: 125mm, 19.5 & 21.5: 150mm
- Bontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise, 780mm width
- Bontrager XR Trail Comp, nylon lock-on
- Bontrager Line Pro, Knock Block, 35mm clamp, 0 degree
- Knock Block Integrated, sealed cartridge bearing, 1-1/8˝ top, 1.5˝ bottom
- Shimano Deore XT M8020 4-piston hydraulic disc
- Bosch PowerTube 500Wh
- Bosch Purion
- Bosch Performance CX
- M - 22.77 kg / 50.2 lbs (with tubes)
- Weight limit
- This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).
Sizing & fit
The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local Trek retailer.
153.0 - 166.5 cm
5'0.2" - 5'5.6"
72.0 - 79.0 cm
28.3" - 31.1"
161.0 - 172.0 cm
5'3.4" - 5'7.7"
76.0 - 81.0 cm
29.9" - 31.9"
165.5 - 179.0 cm
5'5.2" - 5'10.5"
77.0 - 84.0 cm
30.3" - 33.1"
177.0 - 188.0 cm
5'9.7" - 6'2.0"
83.0 - 88.0 cm
32.7" - 34.6"
186.0 - 196.0 cm
6'1.2" - 6'5.2"
87.0 - 92.0 cm
34.3" - 36.2"
All measurements provided in cm unless otherwise noted.
|Frame size number||Frame size letter||Geometry position||Wheel size||A — Seat tube||B — Seat tube angle||Effective seat tube angle||C — Head tube length||D — Head angle||E — Effective top tube||F — Bottom bracket height||G — Bottom bracket drop||H — Chainstay length||I — Offset||J — Trail||K — Wheelbase||L — Standover||M — Frame reach||N — Frame stack|