Trek Rail+ 8 Gen 5 - 2025
Details
Rail+ 8 is an alloy enduro e-bike that packs in what you want most for big adventures. It comes equipped with a Bosch Performance CX drive system with full power for crushing laps and big climbs while its massive battery takes you the distance. 160mm of front and rear travel make Rail+ super capable in the rough and rowdy, and adjustable geometry lets you customize it for how and where you ride.
It's right for you if...
You want a bike that maximizes the fun and is up for gnarly rides that get you off the grid or just hammering in an extra lap or two. You need the capability of an enduro bike for pointing it down the rough and rowdy, and love the feeling of full assist taking the sweat out of the climb back to the top for more.
The tech you get
An Alpha Platinum Aluminum frame with a Bosch Performance CX system (85Nm, 250W), and 800Wh Removable Integrated Battery 2.0. A 160mm RockShox ZEB Select fork with DebonAir spring, Motion Control damper and lockout, and a RockShox Deluxe Select+ RT shock. All topped off with a Shimano XT and SLX blended 12-speed drivetrain, dropper post, Bontrager Line Comp 30 Tubeless Ready wheels, and 4-piston Shimano hydraulic disc brakes.
The final word
Rail + 8 is an enduro e-MTB dialed for big adventures. It packs in capable, adjustable geometry, a massive battery, and a powerful motor to get you wherever you want to go. An upgraded drivetrain balances price and performance for a ride that's ready for anything.
Why you'll love it
- 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
- The massive 800Wh RIB 2.0 battery supports you for big miles and can be easily removed for travel or storage
- It's compatible with the Bosch PowerMore booster battery for going even further on epic adventures
Wheel Size:
Small - 27.5-inch
Medium - X-Large - 29-inch front / 27.5-inch rear
This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).
| Frame size | Small | Small | Medium | Medium | Large | Large | X-Large | X-Large |
|---|---|---|---|---|---|---|---|---|
| Geometry position | High | Low | High | Low | High | Low | High | Low |
| Wheel size | 27.5" | 27.5" | 29"/27.5" | 29"/27.5" | 29"/27.5" | 29"/27.5" | 29"/27.5" | 29"/27.5" |
| Seat tube | 38 | 38 | 41 | 41 | 43.5 | 43.5 | 47 | 47 |
| Seat tube angle | 75.3° | 74.8° | 75.3° | 74.8° | 75.2° | 74.8° | 75.2° | 74.8° |
| Effective seat tube angle | 77.9° | 77.4° | 77.7° | 77.2° | 77.5° | 77.0° | 77.4° | 76.9° |
| Head tube length | 10 | 10 | 10 | 10 | 12 | 12 | 14.5 | 14.5 |
| Head angle | 65.0° | 64.5° | 65.0° | 64.5° | 65.0° | 64.5° | 64.9° | 64.5° |
| Effective top tube | 56.2 | 56.3 | 59.1 | 59.2 | 63.9 | 63.9 | 67 | 67 |
| Bottom bracket height | 34.4 | 33.8 | 34.5 | 33.8 | 34.5 | 33.8 | 34.5 | 33.8 |
| Bottom bracket drop | 1.2 | 1.8 | 1.8 | 2.4 | 1.8 | 2.4 | 1.7 | 2.4 |
| Chainstay length | 44.6 | 44.8 | 44.6 | 44.8 | 44.6 | 44.8 | 44.6 | 44.8 |
| Offset | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 |
| Trail | 11.9 | 12.2 | 12.7 | 13.1 | 12.7 | 13.1 | 12.7 | 13.1 |
| Wheelbase | 120.1 | 127.8 | 122.9 | 123 | 127.7 | 127.8 | 131.3 | 131.4 |
| Standover | 76.7 | 76.2 | 78.4 | 77.8 | 78.5 | 77.9 | 80.4 | 79.8 |
| Frame reach | 43.5 | 43 | 45.5 | 45 | 49.5 | 49 | 52 | 51.5 |
| Frame stack | 59.8 | 59.4 | 63.1 | 62.7 | 64.9 | 64.5 | 67.2 | 66.7 |
| Frame Size | Rider Height (cm) | Rider Height (in) |
|---|---|---|
| Small | 155 - 165 | 5'1" - 5'5" |
| Medium | 165 - 176 | 5'5" - 5'9" |
| Large | 177 - 188 | 5'10" - 6'2" |
| X-Large | 188 - 195 | 6'2" - 6'5" |
Specs
| Frame | Alpha Platinum Aluminum, Removable Integrated Battery (RIB 2.0), tapered head tube, guided internal routing, Motor Armor, angle-adjust headset, Mino Link adjustable geometry, adjustable leverage rate, 34.9mm seat tube, ABP, UDH, Boost148, 12 mm thru axle, 160 mm travel |
|---|---|
| Fork | RockShox ZEB Select, DebonAir spring, Charger RC damper, tapered steerer, 44mm offset, Boost110, Maxle Stealth, 160mm travel |
| Rear Shock | RockShox Super Deluxe Select+ RT, 205mm x 65mm |
| Wheels |
Small Front: Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle, 27.5'' Medium - X-Large Front: Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle, 29'' Rear: Bontrager Line Comp 30, High Strength 6000 Series Aluminum rim, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148, 12mm thru axle, 27.5'' |
| Tires |
Small Front: Bontrager Brevard Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 27.5x2.50'' MEdium - X-Large Front: Bontrager Brevard Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 29x2.50'' Rear: Bontrager Brevard Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 27.5x2.50'' |
| Crankset | E*thirteen E*spec Plus, 160mm length |
| Shifters | Shimano SLX M7100, 12 speed |
| Rear Derailleur | Shimano XT M8100, long cage |
| Cassette/Freewheel | Shimano Deore M6100, 10-51, 12 speed |
| Chain | Shimano SLX M7100, 12 speed |
| Brakes | SRAM DB 8 4-piston hydraulic disc |
| Rotors | SRAM CenterLine, 6-bolt, round edge, 200mm |
| Handlebars | Bontrager Line, alloy, 35mm, 27.5mm rise, 780mm width |
| Tape/Grips | Bontrager XR Trail Comp, nylon lock-on |
| Stem | Bontrager Elite, 35mm, 0 degree, 45mm length |
| Headset | Integrated cartridge bearing, 1-1/8'' top, 1.5'' bottom, angle adjust cup compatible |
| Seatpost |
Bontrager Line Dropper, 150mm travel, MaxFlow, internal routing, 34.9mm, 410mm length Bontrager Line Dropper, 170mm travel, MaxFlow, internal routing, 34.9mm, 450mm length Bontrager Line Dropper, 200mm travel, MaxFlow, internal routing, 34.9mm, 515mm length |
| Saddle | Bontrager Verse P3, steel rails |
| Pedals | VP-536 nylon platform |
| Motor | Bosch Performance Line CX, 20 mph / 32 km/h max assist (25 km/h max assist in EU and APAC) |
| Controller/Display | Bosch System Controller BRC3100, smart system |
| Charger | Bosch standard 4A, 110V, smart system |
* Subject to change without notice.
Part Numbers
| Option | UPC | MPN | Store SKU |
|---|---|---|---|
| Dark Star / Small / 27.5-Inch | 197216109440 | 5329178 | |
| Dark Star / Medium / 29-inch front / 27.5-inch rear | 197216109457 | 5329179 | RAI16236634R |
| Dark Star / Large / 29-inch front / 27.5-inch rear | 197216109464 | 5329180 | RAI16976766R |
| Dark Star / X-Large / 29-inch front / 27.5-inch rear | 197216109471 | 5329181 | |
| Powersurge / Small / 27.5-Inch | 197216109488 | 5329182 | |
| Powersurge / Medium / 29-inch front / 27.5-inch rear | 197216109495 | 5329183 | |
| Powersurge / Large / 29-inch front / 27.5-inch rear | 197216109501 | 5329184 | |
| Powersurge / X-Large / 29-inch front / 27.5-inch rear | 197216109518 | 5329185 |
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