Trek Rail+ 8 Gen 5 2026|Small|Medium|Large|Extra Large|Powersurge|Dark Star

Description

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.

It’s right for you if…

You want a bike that maximises 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 Aluminium frame with a Bosch Performance CX system (85 Nm, 250 W) and 800 Wh Removable Integrated Battery 2.0. A 160 mm RockShox Domain RC 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

The Rail + 8 is an enduro e-MTB dialled 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.

Specifications

Specifications *Frame Size:S, XL, L, M
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 Size:S, XL, L, M
RockShox ZEB Select, DebonAir spring, Charger RC damper, tapered steerer, 44 mm offset, Boost110, Maxle Stealth, 160 mm travel *Shock Size:S, XL, L, M
RockShox Super Deluxe Select RT, 205mm x 65mm

Wheels

Specifications *Front Wheel Size:SBontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 27.5″ Size:XL, L, MBontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 29″ *Rear Wheel Size:S, XL, L, M
Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12mm thru axle, 27.5″ *Rear Skewer Size:S, XL, L, MBontrager Switch thru-axle, removable lever *Tire Size:S, XL, L, M
Bontrager Brevard Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 27.5×2.50″ Size:XL, L, M
Bontrager Brevard Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 29×2.50″ *Tire Part Size:S, XL, L, M
Bontrager TLR sealant, 180 ml/6 oz *Rim Strip Size:S, XL, L, MBontrager TLR Max tyre size Frame: 27.5×2.60″, Fork: See manufacturer

E-system

Specifications *Battery Size:S, XL, L, M
Bosch PowerTube 800 Wh, smart system *Charger Size:S, XL, L, M
Bosch standard 4A, 230V, smart system *Controller Size:S, XL, L, M
Bosch System Controller BRC3100, smart system *Motor Size:S, XL, L, M
Bosch Performance Line CX, 20 mph / 32 km/h max assist (25 km/h max assist in EU and APAC)

Drivetrain

Specifications *Shifter Size:S, XL, L, M
Shimano SLX M7100, 12-speed *Rear Derailleur Size:S, XL, L, M
Shimano XT M8100, long cage *Crank Arm Size:S, XL, L, M
E*thirteen E*spec Plus, 160 mm length *Cassette Size:S, XL, L, M
Shimano Deore M6100, 10-51, 12-speed *Chain Size:S, XL, L, M
Shimano SLX M7100, 12-speed Max. chainring size 1x: 36T

Components

Specifications *Saddle Size:S, XL, L, M
Bontrager Verse P3, steel rails *Seatpost Size:SBontrager Line Dropper, 150mm travel, MaxFlow, internal routing, 34.9 mm, 410 mm length Size:MBontrager Line Dropper, 170 mm travel, MaxFlow, internal routing, 34.9 mm, 450 mm length Size:XL, LBontrager Line Dropper, 200 mm travel, MaxFlow, internal routing, 34.9 mm, 515 mm length *Handlebar Size:S, XL, L, M
Bontrager Line, alloy, 35 mm, 27.5 mm rise, 780 mm width *Grips Size:S, XL, L, M
Bontrager XR Trail Comp, nylon lock-on *Stem Size:S, XL, L, MBontrager Elite, 35 mm, 0-degree, 45 mm length *Brake Size:S, XL, L, M
SRAM DB 8 4-piston hydraulic disc *Brake Rotor Size:S, XL, L, M
SRAM CentreLine, 6-bolt, round-edge, 200 mm Rotor size Max brake rotor sizes Frame: 220 mm, Fork: see fork manufacturer

Accessories

Specifications *Fender Size:S, XL, L, MTrek 27.5″ custom fender

Weight

Specifications Weight M 25.08 kg/55.3 lb (with TLR sealant, no 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, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.

Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.