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  • Powerfly LT 9.9 Plus
2019

Powerfly LT 9.9 Plus

/
$8,999.99 Model 27119

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.

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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.

The Walkthrough

favorite_borderWhy you'll love it

  1. 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
  2. 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
  3. Advanced spec including e-MTB-specific parts and Trek's RE:aktiv damper take this model to the next level
  4. 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."

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"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."

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"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."

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"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."

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Features

Suspension Calculator

This suspension calculator will help you optimize your suspension settings for your riding weight. Simply follow the steps to find your best set up.

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Removable Integrated Battery

RIB is a one-piece battery and cover with a built-in handle that can easily be removed and re-installed in the frame with no tools and no hassle. It’s the most convenient way to remove your battery for transport, security, or just easier charging.

ABP

Our patented Active Braking Pivot allows your suspension to work freely whether you’re on the brakes or off. It’s smooth, controlled suspension that’s at its best all the time.

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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.

Motor Armor

This unique protection-shield made of lightweight but robust aluminum protects the motor against stones.

OCLV Mountain Carbon

Trek's mountain-specific carbon fiber is tougher carbon, with unique materials and layup procedures, Trek's advanced engineering, and a higher standard of testing.

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Boost148/110

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.

Specifications

  • Frameset

    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
    Rear suspension
    RockShox Deluxe RT3, RE:aktiv 3-position damper, tuned by Trek Suspension Lab, 205x57.5 mm

  • Wheels

    Wheels
    Bontrager Line Pro 40 carbon, Tubeless Ready, 108T Rapid Drive, Boost110 front, Boost148 rear
    Tires
    Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, 120tpi, aramid bead, 27.5x2.80˝

  • Drivetrain

    Shifters
    SRAM XX1 Eagle single-click, 12 speed
    Rear derailleur
    SRAM XX1 Eagle, Roller Bearing Clutch
    Crank
    e*thirteen TRS carbon, 15T w/chainguard
    Cassette
    SRAM XG-1230 Eagle, 11-50, 12 speed
    Chain
    SRAM NX Eagle
    Pedals
    Not included

  • Components

    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
    Handlebar
    Bontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise, 780mm width
    Grips
    Bontrager XR Trail Comp, nylon lock-on
    Stem
    Bontrager Line Pro, Knock Block, 35mm clamp, 0 degree
    Headset
    Knock Block Integrated, sealed cartridge bearing, 1-1/8˝ top, 1.5˝ bottom
    Brakeset
    Shimano Deore XT M8020 4-piston hydraulic disc

  • Accessories

    Battery
    Bosch PowerTube 500Wh
    Controller
    Bosch Purion
    Motor
    Bosch Performance CX

  • Weight

    Weight
    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).
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Bike and frame weights are based off Trek pre-production painted frames at time of publication. Weights may vary in final production.

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.

 

Rider Height

Inseam

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
15.5 in S High 27.5" 36.8 71.5° 74.0° 10.0 66.0° 57.0 35.0 0.6 47.4 5.1 10.3 118.5 78.5 39.1 59.8
17.5 in M High 27.5" 41.9 71.5° 74.0° 10.0 66.0° 60.0 35.0 0.6 47.4 5.1 10.3 121.5 77.6 42.1 59.9
18.5 in ML High 27.5" 44.5 71.5° 73.9° 10.5 66.0° 62.0 35.0 0.6 47.4 5.1 10.3 123.5 76.5 44.0 60.3
19.5 in L High 27.5" 47.0 71.5° 73.9° 11.0 66.0° 63.4 35.0 0.6 47.4 5.1 10.3 125.0 76.3 45.3 60.8
21.5 in XL High 27.5" 52.1 71.5° 73.9° 12.5 66.0° 66.2 35.0 0.6 47.4 5.1 10.3 128.0 77.2 47.6 62.1

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