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You’re looking for an e-MTB that’s just as ready to shred as non-electric trail bikes. You want a powerful Bosch drive system that’ll propel you up climbs so you can hit lap after lap.

The tech you get

A burly alloy frame with 150mm of rear travel that fully encases a 500Wh battery, an e-MTB optimized 160mm RockShox 35 Gold RL fork, a powerful new Bosch Performance Line CX 250W motor that assists up to 20 mph, and a Purion controller. Plus, a 1x12 drivetrain with a wide gear range so you can always find the ideal cadence for the motor, a dropper post, powerful 4-piston brakes for more downhill confidence, and 29er Bontrager wheels with nimble yet grippy 2.6" tires.

The final word

Rail 5 is our best-value long-travel e-MTB. It's equally as capable as our regular long-travel trail bikes, it just gets you back to the top in a flash. The powerful Bosch drive systems and durable part spec make for long-lasting fun.

See it in action

favorite_borderWhy you'll love it

  1. Rail shreds just as hard as its non-electric brethren, plus it powers you right back up the mountain—no shuttle or lift necessary
  2. The Purion controller has Walk Assist and an intelligent eMTB mode that automatically delivers the right amount of power based on your terrain
  3. Made with the same exclusive frame tech as Remedy and Slash, like Mino Link adjustable geometry, a Straight Shot down tube for extra stiffness, and Active Braking Pivot (ABP)
  4. The dropper post lets you lower your saddle on the fly so it's out of the way on descents
  5. 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  

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Features

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 farther 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

Active Braking Pivot

Active Braking Pivot allows our engineers to tune how the suspension reacts to acceleration and braking forces independently. That means you get more confident control when you need it most.

Learn more

Knock Block

Knock Block has your frame's back when things go wrong. It prevents your handlebars from spinning all the way around in a crash, so your hoses won't get yanked, and your controls won't hit the top tube.

Learn more

Specifications

*spec applies to all sizes unless otherwise noted

Frameset
Frame Alpha Platinum Aluminum, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, magnesium rocker link, Motor Armor, Mino Link, ABP, Boost148, 12mm thru axle, 150mm travel
Fork RockShox 35 Gold RL, DebonAir spring, Motion Control damper, e-MTB optimized, tapered steerer, 44mm offset, Boost110, 15mm Maxle Stealth, 160mm travel
Shock RockShox Deluxe Select+, 230x57.5mm
Max compatible fork travel 170mm
Wheels
Front hub Bontrager sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru axle
Rear hub Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12mm thru axle
Rear skewer Bontrager Switch thru axle
Rim Alex MD35, Tubeless Ready, 32-hole, 35mm width, presta valve
Tire Bontrager XR4 Comp, wire bead, 30 tpi, 29x2.60''
Max tire size 29x2.60"
Drivetrain
Shifter SRAM SX Eagle single-click, 12 speed
Rear derailleur SRAM SX Eagle
Crank SRAM X1 1000, 36T, 165mm length
Cassette SRAM PG-1210 Eagle, 11-50, 12 speed
Chain SRAM SX Eagle, 12 speed
Pedal VP-536 nylon platform
Max chainring size 34T
Components
Saddle Bontrager Arvada, steel rails, 138mm width
*Seatpost Size: S
TranzX JD-YSP18, 100mm travel, internal routing, 31.6mm, 361mm length
Size: M, L, XL
TranzX JD-YSP18, 130mm travel, internal routing, 31.6mm, 425mm length
Handlebar Bontrager alloy, 31.8mm, 15mm rise, 750mm width
Grips Bontrager XR Trail Comp, nylon lock-on
Stem Bontrager Rhythm Comp, 31.8mm, Knock Block, 0 degree, 50mm length
Brake Tektro HD-M745 4-piston hydraulic disc
Brake rotor Tektro, 203mm, 6-bolt
Accessories
Battery Bosch PowerTube 500
Charger Bosch compact 2A (100-240V) charger
Controller Bosch Purion
Motor Bosch Performance CX, magnesium motor body, 250 watt, 85 Nm, 20mph or 32km/h max assist
Weight
Weight M - 23.53 kg / 51.88 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 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
15.5 S High 29" 41.0 75.0° 10.5 64.9° 58.7 34.4 2.9 44.7 4.3 12.7 119.5 74.8 42.5 62.3 4.0
15.5 S Low 29" 41.0 75.0° 10.5 64.5° 58.8 33.9 3.5 44.8 4.3 13.1 119.6 74.3 42.0 62.6 4.0
17.5 M High 29" 42.0 75.0° 10.5 64.9° 61.1 34.4 2.9 44.7 4.3 12.7 122.0 77.8 45.0 62.2 5.0
17.5 M Low 29" 42.0 75.0° 10.5 64.5° 61.3 33.9 3.5 44.8 4.3 13.1 122.1 77.3 44.5 62.6 5.0
19.5 L High 29" 45.0 75.0° 11.0 64.9° 63.3 34.4 2.9 44.7 4.3 12.7 124.3 76.7 47.0 62.7 5.0
19.5 L Low 29" 45.0 75.0° 11.0 64.5° 63.4 33.9 3.5 44.8 4.3 13.1 124.3 76.2 46.5 63.0 5.0
21.5 XL High 29" 50.0 75.0° 12.0 64.9° 66.5 34.4 2.9 44.7 4.3 12.7 127.7 78.0 49.9 63.6 5.0
21.5 XL Low 29" 50.0 75.0° 12.0 64.5° 66.6 33.9 3.5 44.8 4.3 13.1 127.8 77.5 49.5 63.9 5.0

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