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You want more than just the added capability of electric-assist. You also want quality mountain bike parts that make the biggest difference on the trail, the user-friendliness of the Removable Integrated Battery (RIB) system, and the good looks that come with a battery that's fully encased in the frame.

The tech you get

A durable Alpha Platinum Aluminium frame that fully encases a long-range 600 Wh battery for great aesthetics and protection on the trail, a new Bosch Performance CX 250-watt motor that assists up to 25 km/h and an ergonomic Purion controller. Plus, a 120 mm RockShox 35 Gold RL fork with an ultra-plush DebonAir spring, Shimano 4-piston brakes, Tubeless Ready Bontrager Line Comp 30 wheels, a 1x12 Shimano SLX/XT drivetrain and a dropper post.

The final word

Quality trail bike parts, a powerful Bosch system and the streamlined looks and easy user interface of the Removable Integrated Battery (RIB). Plus, the dropper post and RockShox DebonAir fork give you a major upgrade in trail bike performance.

favorite_borderWhy you'll love it

  1. The new, better-than-ever Bosch motor is smaller, lighter and more efficient. It feels more natural while you’re pedalling, and has less drag when you’re not
  2. 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 remove the battery without tools and lets you mount a water bottle cage
  3. The Purion controller has Walk Assist and an intelligent eMTB mode that automatically delivers the right amount of power based on your terrain
  4. It's equipped with an external charging port for easy charging on or off the bike
  5. All sizes but L feature a curved top tube that makes standing over the bike easier. Plus, Smart Wheel Sizing means you'll get the fastest wheel that fits – 29˝ wheels on larger frames, 27.5˝ wheels on smaller frames


Features

Will my bike have a curved top tube?

Will my bike have a curved top tube?

Smaller frames (XS, S and M) have a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is good for shorter riders because it allows them to straddle their bike more easily. The larger frame (L) has a straight top tube because taller riders with longer legs typically don’t have the same issues with standover height.

New Bosch Performance Line CX

New Bosch Performance Line CX

The all-new Bosch Performance Line CX motor is lighter, smaller and quieter than previous versions, for cleaner integration and more nimble handling. It’s also more efficient so you can go further on a single battery charge. Use the intelligent eMTB mode to automatically adjust the amount of assist to match the terrain. It’s a set-and-forget mode that delivers just the right amount of power so you can focus on enjoying the ride.

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.

Watch video

What is the range?

To see how far you can ride your electric mountain bike on a single charge, check out Bosch’s range calculator. We’ve auto-filled the variables for this bike model and the average rider, but you can make adjustments to get your most accurate estimate.

Calculate your range

Specifications

*spec applies to all sizes unless otherwise noted

Frameset
Frame Alpha Platinum Aluminium, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, Motor Armor, Boost148
*Fork Size: XS
RockShox 35 Gold RL, DebonAir spring, Motion Control damper, e-MTB optimized, tapered steerer, 44mm offset, Boost110, 15mm Maxle Stealth, 80mm travel
Size: S , M , L
RockShox 35 Gold RL, DebonAir spring, Motion Control damper, e-MTB optimised, tapered steerer, 44 mm offset, Boost110, 15 mm Maxle Stealth, 120 mm travel
Max compatible fork travel 120mm (XS & S: 100mm)
Wheels
Wheel front Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle
Wheel rear Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Shimano MicroSpline freehub, Boost148, 12 mm thru axle
Hub front Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle
Hub rear Bontrager alloy, sealed bearing, 6-bolt, Shimano MicroSpline freehub, Boost148, 12 mm thru axle
Skewer rear Bontrager Switch thru axle, removable lever
Spokes DT Swiss Champion, J-Bend, Black
*Tyre Size: XS , S
Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 27.5x2.35
Size: M , L
Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29x2.40"
Tyre part Bontrager TLR valve, 50 mm
Rim strip Bontrager TLR
Max tyre size 29x2.60" or 27.5x2.8" (XS & S: 27.5x2.60")
Drivetrain
Shifter Shimano SLX M7100, 12-speed
Rear derailleur Shimano XT M8100, long cage, 51T max cog
Crank arm E*thirteen E*spec Plus, 34T, 165 mm length
Cassette Shimano SLX M7100, 10-51, 12-speed
Chain Shimano SLX M7100, 12-speed
Pedal VP-536 nylon platform
Components
Saddle Bontrager Commuter Comp
*Seatpost Size: XS , S
TranzX JD-YSP18, 100 mm travel, internal routing, 31.6 mm, 361 mm length
Size: M , L
TranzX JD-YSP18, 130mm travel, internal routing, 31.6 mm, 425 mm length
*Handlebar Size: XS
Bontrager alloy, 31.8 mm, 15 mm rise, 690 mm width
Size: S , M
Bontrager alloy, 31.8 mm, 15 mm rise, 720 mm width
Size: L
Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
Grips Bontrager XR Endurance Elite, lock-on, ergonomic
*Stem Size: XS , S
Bontrager Rhythm Comp, 31.8mm, Knock Block, 0-degree, 60 mm length
Size: M , L
Bontrager Rhythm Comp, 31.8 mm, Knock Block, 0-degree, 70 mm length
Head set FSA IS-2, 1-1/8" top, 1.5" bottom
*Brake Size: XS , S , M , L
Shimano hydraulic disc, MT501 lever, MT520 4-piston calliper
Size: XS , S , M , L
Shimano MT520 4-piston hydraulic disc
Brake rotor Shimano RT66, 203 mm, 6-bolt
Accessories
Battery Bosch PowerTube 625
Charger Bosch standard 4A (220-240 V) charger
Controller Bosch Purion
Motor Bosch Performance CX, magnesium motor body, 250 watt, 85 Nm, 25 km/h (15.5 mph) max assist, 32 km/h for New Zealand
Weight
Weight S - 21.84 kg / 48.15 lbs (with tubes)
Weight limit This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
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 on Trek pre-production painted frames at the time of publication. Weights may vary in final production.

Sizing & fit

Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on trekbikes.com are for general comparison purposes only. To find your perfect fit, visit an authorised Trek retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.

 

Rider Height

Inseam

All measurements provided in cm unless otherwise stated.

Frame size number Frame size letter Wheel size A — Seat tube 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 Stem length
13.5 XS 27.5" 36.3 70.0° 12 65.0° 57.9 32.8 3.7 45.5 5.1 11.4 113.5 70.6 35.2 62.1 4
15.5 S 27.5" 39.4 71.5° 13 67.6° 59.8 30.7 4.9 45.5 4.2 10.1 112.5 72.1 39 62.3 5
17.5 M 29" 41.9 71.7° 13 67.7° 61.7 32.4 4.9 45.5 5.1 9.8 115.5 79.4 40.6 63.9 6
19.5 L 29" 47 71.7° 14 67.7° 64.1 32.4 5 45.5 5.1 9.8 118 81.6 42.7 64.8 7

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