Description
Trek Rail+ 8 Gen 5 Electric Mountain Bike
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Wheel size: MX
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Rear shock: RockShox Super Deluxe Select RT, 160 mm
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Fork: RockShox ZEB Select, 160 mm
- Frame: Alpha Platinum Aluminium
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Motor: Bosch
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Torque: 85–100 Nm
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Battery size: 800 Wh
Built for Big Terrain
The Trek Rail+ 8 Gen 5 is a powerful and highly capable electric mountain bike designed for riders who want to tackle demanding trails, steep climbs and technical descents with confidence. As part of the Trek Rail and Trek Rail+ range, this long-travel e-MTB blends proven enduro geometry with Bosch’s latest smart system technology, making it an ideal choice for riders searching for a high-performance Trek electric mountain bike.
At the heart of the Rail+ 8 is a Bosch Performance Line CX motor, delivering 85 Nm of torque as standard and upgrade ready to 100 Nm through the Bosch eBike Flow app. Paired with a large 800 Wh Bosch PowerTube battery, this Trek electric mountain bike offers sustained power for long days in the hills, with smooth assistance that adapts automatically to the terrain in eMTB mode. The RIB 2.0 system allows easy battery removal for charging or travel while keeping it secure on the trail.
The Alpha Platinum Aluminium frame is engineered for aggressive riding, combining 160 mm of rear travel with Trek’s Active Braking Pivot to maintain traction and control when braking on rough ground. Up front, the RockShox ZEB Select fork delivers confident handling through rock gardens and steep descents, while the adjustable leverage rate lets riders fine-tune suspension feel for plush trail riding or more progressive support on big hits.
A mixed wheel size setup enhances the Rail+ 8’s all-mountain capability, with a 29″ front wheel for rollover and stability, and a 27.5″ rear wheel for agility and playful handling. Shimano XT and SLX drivetrain components ensure dependable shifting under load, while SRAM DB 8 4-piston brakes provide consistent stopping power on long, technical descents.
The integrated Bosch Kiox 400C display keeps key ride data clearly visible and adds practical USB-C charging, turning the Trek Rail+ 8 into a true adventure-ready electric mountain bike. With tubeless-ready Bontrager wheels, a long-travel dropper post and durable trail components throughout, the Trek Rail+ 8 Gen 5 is a compelling option for riders looking to buy a premium Trek electric mountain bike built for hard riding and big terrain.
Sizing Guide
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Small: 155–165 cm
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Medium: 165–177 cm
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Large: 177–188 cm
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Extra Large: 188–195 cm
The Trek Rail+ 8 Gen 5 is designed for riders seeking a powerful, confidence-inspiring electric mountain bike with the range, suspension and control to handle demanding trails and all-day adventures.
Bike specifications are advised by the manufacturer and can be subject to change without prior warning.
Please call our helpful sales team on 01539 821 443 or email us for the latest up-to-date product information.


