Trek Rail+ 8 Gen 5 2025 Electric Mountain Bike

The Rail+ 8 is an aluminium enduro e-bike with big power and tons of travel for wild, ride-anything adventures. It starts with an Alpha Platinum Aluminium frame paired with a RockShox Super Deluxe Select+ RT shock and ZEB Select fork (160 mm front/rear) for making quick work of chunky backcountry rock gardens. You get the smooth-shifting performance of a Shimano XT/SLX drivetrain, stop-on-a-dime control from SRAM DB 8 4-piston disc brakes, a Bontrager Line dropper post and tubeless-ready Bontrager Line TLR 30 wheels.

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## Key Features

* The Rail+ delivers adventure with plenty of travel and power for getting after epic rides that take you peak to peak or chasing endless enduro laps
* The powerful Bosch Performance CX system goes full gas up steep climbs and keeps you cool for the descents
* You can tweak your geometry and suspension leverage rate for how you ride, and add in adjustable angle headset cups (sold separately) for even more adjustability
* Want even more boost? With the Bosch e-Bike Flow app, you can increase torque to 100 Nm and peak power up to 750W.
* The massive 800 Wh RIB 2.0 battery supports you for big miles and can be easily removed for travel or storage, and is compatible with PowerMore for even bigger rides

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## Specifications

### Frameset

* Frame: Alpha Platinum Aluminium, Removable Integrated Battery (RIB 2.0), tapered head tube, guided internal routing, Motor Armor, angle-adjust headset, Mino Link adjustable geometry, adjustable leverage rate, 34.9 mm seat tube, ABP, UDH, Boost148, 12 mm thru axle, 160 mm travel
* Fork: RockShox ZEB Select, DebonAir spring, Charger RC damper, tapered steerer, 44 mm offset, Boost110, Maxle Stealth, 160 mm travel
* Rear Shock: RockShox Super Deluxe Select RT, 205mm x 65mm

### Wheels

* Rims: (f) Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 29 (r) Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12 mm thru axle, 27.5
* Tyres: Bontrager Brevard Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 27.5/29x2.50

### Drivetrain

* Crankset: E*thirteen E*spec Plus, 160 mm length
* Shifters: Shimano SLX M7100, 12-speed
* Rear Derailleur: Shimano XT M8100, long cage
* Chain: Shimano SLX M7100, 12-speed
* Cassette: Shimano Deore M6100, 10-51, 12-speed

### Components

* Handlebar: Bontrager Line, alloy, 35 mm, 27.5 mm rise, 780 mm width
* Stem: Bontrager Elite, 35 mm, 0-degree, 45 mm length
* Grips: Bontrager XR Trail Comp, nylon lock-on
* Brakes: SRAM DB 8 4-piston hydraulic disc
* Saddle: Bontrager Verse P3, steel rails
* Seatpost: Bontrager Line Dropper, MaxFlow, internal routing, 34.9 mm
* Extras: Trek 27.5 custom fender

### E-System

* Motor: Bosch Performance Line CX, 20 mph / 32 km/h max assist (25 km/h max assist in EU and APAC)
* Battery: Bosch PowerTube 800 Wh, smart system
* Controller: Bosch System Controller BRC3100, smart system

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## Trek Rail Sizing

| | S | M | L | XL |
| ----- | ----- | ----- | ----- |
| Rider Height (cm) | 155 - 165 | 165 - 176 | 177 - 188 | 188 - 195 |
| Inseam (cm) | 74 - 78 | 79 - 83 | 84 - 89 | 89 - 91 |