Product Details
Category: Long-Travel Alloy Electric Mountain Bike
Description:
The Rail 8 is Trek’s top-tier alloy electric mountain bike, built for serious enduro rides with long-travel suspension and powerful electric assist. It’s designed to handle gnarly descents and get you back up the mountain faster than ever, thanks to the Bosch Performance Line CX smart system. With upgraded components like a wireless SRAM GX Eagle AXS drivetrain and high-performance RockShox suspension, this bike is perfect for riders who want serious power and capability on all terrains.
It's right for you if…
You’re looking for a do-it-all long-travel e-MTB that excels both on climbs and descents. You want the power of Bosch’s smart system for steep climbs, combined with the benefit of a high-end suspension setup for smooth and controlled descents. Plus, you want SRAM’s wireless transmission for clean, reliable shifting.
The tech you get
The Rail 8 features a durable alloy frame with a 625Wh Removable Integrated Battery (RIB) system. It comes with a 160mm RockShox Domane RC fork featuring 38mm stanchions, DebonAir spring, and Motion Control damper, as well as a 150mm RockShox Deluxe Select+ rear shock. The bike is powered by Bosch’s Performance Line CX motor, supporting speeds up to 20 mph, and includes a Bluetooth-connected LED remote for activity tracking via the eBike Flow app. It’s also equipped with a wireless SRAM GX Eagle AXS transmission and rolls on tubeless-ready Bontrager Line Comp 30 29er wheels.
The final word
The Rail 8 offers top-tier performance with upgrades in all the right places. Its powerful Bosch motor, long-travel suspension, and wireless drivetrain make it a versatile and capable e-MTB, ready to take on any terrain. If you're after a long-travel alloy e-bike that’s built for serious adventure, the Rail 8 is your ride.
Why you'll love it:
- The Rail Gen 3 features Bosch’s smart system, delivering all the power you need for big adventures, with a Bluetooth-connected LED remote that’s sleek and intuitive.
- Trek’s Removable Integrated Battery (RIB) system hides the battery in the frame for protection, makes removal tool-free, and allows for a water bottle cage.
- The bike keeps the cockpit clean by skipping a display, but the smart system makes it easy to add one if needed.
- The controller has Walk Assist and an intelligent e-MTB mode that adjusts power automatically based on terrain.
- The frame features Trek’s trail-proven tech, including Mino Link adjustable geometry, Straight Shot down tube for extra stiffness, and Active Braking Pivot (ABP) for enhanced control.
Specifications:
| Category | Long-Travel Alloy Electric Mountain Bike |
|---|---|
| Motor | Bosch Performance Line CX smart system |
| Battery Capacity | 625Wh Removable Integrated Battery (RIB) |
| Battery Range | 25 to 65 miles |
| Suspension | 160mm RockShox Domane RC front, 150mm RockShox Deluxe Select+ rear |
| Frame | Alpha Platinum Aluminum |
| Wheel Size | Bontrager Line Comp 30, Tubeless-Ready 29er |
| Drivetrain | SRAM GX Eagle AXS wireless transmission |
| Brakes | Hydraulic disc brakes |
| Dropper Post | Yes |
| Weight | 52 lbs |
Sizing
Geometry
| Frame size letter | S | S | M | M | L | L | XL | XL |
|---|---|---|---|---|---|---|---|---|
| Geometry position | High | Low | High | Low | High | Low | High | Low |
| Wheel size | 29" | 29" | 29" | 29" | 29" | 29" | 29" | 29" |
| A — Seat tube (cm) | 41 | 41 | 42 | 42 | 45 | 45 | 50 | 50 |
| B — Seat tube angle | 68.0° | 67.6° | 68.0° | 67.6° | 68.0° | 67.6° | 68.0° | 67.6° |
| Effective seat tube angle | 75.4° | 75.0° | 75.4° | 75.0° | 75.4° | 75.0° | 75.4° | 75.0° |
| C — Head tube length (cm) | 10.5 | 10.5 | 10.5 | 10.5 | 11 | 11 | 12 | 12 |
| D — Head angle (cm) | 64.9° | 64.5° | 64.9° | 64.5° | 64.9° | 64.5° | 64.9° | 64.5° |
| E — Effective top tube (cm) | 58.7 | 58.8 | 61.1 | 61.3 | 63.3 | 63.4 | 66.5 | 66.6 |
| F — Bottom bracket height (cm) | 34.4 | 33.9 | 34.4 | 33.9 | 34.4 | 33.9 | 34.4 | 33.9 |
| G — Bottom bracket drop (cm) | 2.9 | 3.5 | 2.9 | 3.5 | 2.9 | 3.5 | 2.9 | 3.5 |
| H — Chainstay length (cm) | 44.7 | 44.8 | 44.7 | 44.8 | 44.7 | 44.8 | 44.7 | 44.8 |
| I — Offset (cm) | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 |
| J — Trail (cm) | 12.7 | 13.1 | 12.7 | 13.1 | 12.7 | 13.1 | 12.7 | 13.1 |
| K — Wheelbase (cm) | 119.5 | 119.6 | 122 | 122.1 | 124.3 | 124.3 | 127.7 | 127.8 |
| L — Standover (cm) | 74.8 | 74.3 | 77.8 | 77.3 | 76.7 | 76.2 | 78 | 77.5 |
| M — Frame reach (cm) | 42.5 | 42 | 45 | 44.5 | 47 | 46.5 | 49.9 | 49.5 |
| N — Frame stack (cm) | 62.3 | 62.6 | 62.2 | 62.6 | 62.7 | 63 | 63.6 | 63.9 |
Specs
| Motor | Bosch Performance Line CX, smart system, magnesium motor body, 85 Nm |
|---|---|
| Pedals | VP-536 nylon platform |
| Battery | Bosch PowerTube 625Wh, smart system |
| Charger | Bosch standard 4A, 110V, smart system |
| Fork | RockShox Domain RC, DebonAir, Motion Control damper, lockout, tapered steerer, 44mm offset, oversized crown for eMTB, Boost110, 15mm Maxle Stealth, 160mm travel |
| Stem | Bontrager Rhythm Comp, 31.8mm, 0 degree, 50mm length |
| Chain | SRAM GX Eagle, T-Type, 12 speed |
| 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 |
| Tires | Bontrager XR5 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 60 tpi, 29x2.50'' |
| Brakes | SRAM DB 8 4-piston hydraulic disc // SRAM DB 8 4-piston hydraulic disc |
| Rotors | SRAM CenterLine, 6-bolt, round-edge, 180mm // SRAM CenterLine, 6-bolt, round edge, 200mm |
| Saddle | Bontrager Verse P3, chromoly rails |
| Wheels | Front: Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle, 29'' / Rear: Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12mm thru axle, 29'' |
| Headset | Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom |
| Crankset | SRAM GX, 160mm length |
| Seatpost | Bontrager Line Dropper, 100mm travel, MaxFlow, internal routing, 31.6mm, 310mm length |
| Shifters | SRAM AXS POD |
| Chainrings | SRAM XX T-Type, 34T, steel |
| Handlebars | Bontrager Rhythm Comp, alloy, 31.8mm, 15mm rise, 780mm width |
| Rear Shock | RockShox Deluxe Select+ RT, 230mm x 57.5mm |
| Tape/Grips | Bontrager XR Trail Elite, nylon lock-on |
| Rear Derailleur | SRAM GX Eagle AXS, T-Type |
| Cassette/Freewheel | SRAM Eagle XS-1275, T-Type,10-52, 12 speed |
* Subject to change without notice.