Description
The Trek Rail+ 8 Gen 5 is built for riders who want to go further, faster, and wilder. Designed with Trek’s durable Alpha Platinum Aluminium frame, this enduro e-MTB is ready to crush technical descents, steep climbs, and everything in between. Powered by a Bosch Performance Line CX motor, the Rail+ 8 delivers smooth, confident acceleration that makes every ride feel effortless – even when the trail gets rowdy.
It’s equipped with a plush RockShox ZEB Select fork and Super Deluxe+ shock offering 160 mm of travel, letting you glide through rock gardens and rough terrain with confidence. A Shimano XT/SLX drivetrain ensures precise, reliable shifting, while SRAM DB8 4-piston disc brakes give you powerful stopping performance when you need it most.
With a Bontrager Line dropper post and tubeless-ready Bontrager Line TLR 30 wheels, this e-bike is built for control and comfort on every ride. Whether you're chasing singletrack thrills or tackling all-day backcountry missions, the Rail+ 8 Gen 5 gives you the freedom to ride harder and explore further.
Key Features:
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Frame: Alpha Platinum Aluminium – lightweight and durable
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Motor: Bosch Performance Line CX – strong, responsive e-MTB power
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Suspension: RockShox ZEB Select fork and Super Deluxe+ shock (160 mm travel)
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Drivetrain: Shimano XT/SLX – smooth, precise gear changes
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Brakes: SRAM DB8 4-piston hydraulic discs – powerful, consistent braking
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Wheels: Bontrager Line TLR 30 – tubeless-ready for fewer flats and better traction
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Dropper Post: Bontrager Line – easy saddle adjustment for aggressive riding
Specification
| 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 |
| Shock | RockShox Super Deluxe Select RT, 205mm x 65mm |
| Wheels | |
| Wheel - Front |
Size: S Size: M, L, XL |
| Wheel - Rear | Bontrager Line Comp 30, High Strength 6000 Series Aluminium rim, Tubeless-Ready, Rapid Drive 108, 6-bolt, Shimano Micro Spline freehub, Boost148, 12 mm thru axle, 27.5" |
| Skewer - Rear | Bontrager Switch thru-axle, removable lever |
| Tyre |
Size: S, M, L, XL Bontrager Brevard Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 27.5x2.50"
Size: M, L, XL
Bontrager Brevard Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 29x2.50"
|
| Tyre - Part | Bontrager TLR sealant, 180 ml/6 oz |
| Max Tyre Size | Frame: 27.5x2.60", Fork: See manufacturer |
| E-System | |
| Battery | Bosch PowerTube 800 Wh, smart system |
| Charger | Bosch standard 4A, 230V, smart system |
| Controller | Bosch Kiox 400C, mini remote |
| Motor | Bosch Performance Line CX, 20 mph / 32 km/h max assist (25 km/h max assist in EU and APAC) |
| E-Bike Classification | Class 1 |
| Drivetrain | |
| Shifter | Shimano SLX M7100, 12-speed |
| Rear Derailleur | Shimano XT M8100, long cage |
| Crank Arm | E*thirteen E*spec Plus, 160 mm length |
| Cassette | Shimano Deore M6100, 10-51, 12-speed |
| Chain | Shimano SLX M7100, 12-speed |
| Pedal | VP-536 nylon platform |
| Max. Chainring Size | 1x: 36T |
| Components | |
| Saddle | Bontrager Verse P3, steel rails |
| Seatpost |
Size: S Size: M, L, XL Size: L, XL |
| Handlebar | Bontrager Line, alloy, 35 mm, 27.5 mm rise, 780 mm width |
| Grips | Bontrager XR Trail Comp, nylon lock-on |
| Stem | Bontrager Elite, 35 mm, 0-degree, 45 mm length |
| Head Set | Integrated cartridge bearing, 1-1/8" top, 1.5" bottom, angle adjust cup compatible |
| Brake | SRAM DB 8 4-piston hydraulic disc |
| Brake Rotor | SRAM CentreLine, 6-bolt, round-edge, 200 mm |
| Rotor Size | Max brake rotor sizes – Frame: 220 mm, Fork: see fork manufacturer |
| Accessories | |
| Mudguard | Trek 27.5" custom fender |
| Weight | |
| Bike 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). |
*Trek 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.
Reviews
Flow Mountain Bike
"The Trek Rail+ takes everything great about its predecessor and makes it even better. The new design features a quieter Bosch motor, a more secure battery system, and a fun, confidence-inspiring mullet setup. With extra rear travel, adjustable geometry, and the option to tweak suspension or battery capacity, the Rail+ adapts to any trail and riding style. Whether you’re tackling steep descents, long climbs, or all-day adventures, this e-MTB delivers powerful performance, versatility, and pure riding enjoyment."
Check out the full review here
The Loam Wolf
Sizing Guide
| Size | Rider Height | Inseam |
| S |
155 - 165 cm 5'1" - 5'5" |
74 - 78 cm 29" - 31" |
| M |
165 - 177 cm 5'5" - 5'10" |
79 - 83 cm 31" - 33" |
| L |
177 - 188 cm 5'10" - 6'2" |
84 - 89 cm 33" - 35" |
| XL |
188 - 195 cm 6'2" - 6'5" |
89 - 91 cm 35" - 36" |
Geometry
Sizing Table
| Frame Size Number | 15.5" | 15.5" | 17.5" | 17.5" | 19.5" | 19.5" | 21.5" |
| Frame Size Letter | S | S | M | M | L | L | XL |
| Geometry Position | High | Low | High | Low | High | Low | High |
| Wheel Size | 27.5" |
27.5" |
29"/27.5" |
29"/27.5" |
29"/27.5" | 29"/27.5" |
29"/27.5" |
| A - Seat Tube | 38.0 |
38.0 | 41.0 |
41.0 |
43.5 |
43.5 |
47.0 |
| B - Seat Tube Angle | 75.3° |
74.8° |
75.3° |
74.8° |
75.2° |
74.8° |
75.2° |
| Effective Seat Tube Angle | 77.9° | 77.4° |
77.7° |
77.2° |
77.5° |
77.0° |
77.4° |
| C - Head Tube Length | 10.0 |
10.0 |
10.0 | 10.0 | 12.0 | 12.0 | 14.5 |
| D - Head Angle | 64.6° |
64.2° |
64.6° |
64.2° |
64.6° |
64.2° |
64.6° |
| E - Effective Top Tube | 56.2 | 56.3 | 59.1 | 59.2 | 63.9 | 63.9 | 67.0 |
| F - Bottom Bracket Height | 34.4 | 33.8 | 34.5 | 33.8 | 34.5 | 33.8 | 34.5 |
| G - Bottom Bracket Drop | 1.2 | 1.8 | 1.8 | 2.4 | 1.8 | 2.4 | 1.7 |
| H - Chainstay Length | 44.6 | 44.8 | 44.6 | 44.8 | 44.6 | 44.8 | 44.6 |
| I - Offset | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 |
| J - Trail | 11.9 | 12.2 | 12.7 | 13.1 | 12.7 | 13.1 | 12.7 |
| K - Wheelbase | 120.1 | 127.8 | 122.9 | 123.0 | 127.7 | 127.8 | 131.3 |
| L - Standover | 76.7 | 76.2 | 78.4 | 77.8 | 78.5 | 77.9 | 80.4 |
| M - Frame Reach | 43.5 | 43.0 | 45.5 | 45.0 | 49.5 | 49.0 | 52.0 |
| N - Frame Stack | 59.8 | 59.4 | 63.1 | 62.7 | 64.9 | 64.5 | 67.2 |
