Aluminium full-suspension electric mountain bike Trek Rail+ 5 Viper red: Bosch CX 800 Wh, 160/160 mm, 24.78 kg

Trek Rail+ 5 Viper Red: a low-maintenance e-MTB for the mountains

Designed to be ridden often and for a long time, the Trek Rail+ 5 combines a Bosch Performance Line CX motor, an 800 Wh PowerTube battery and Shimano Deore and RockShox components known for their easy maintenance. Its 160 mm of front and rear travel sits on an Alpha Platinum aluminium frame, for 24.78 kg in size M according to Trek. Viper Red, a bright, bold red, stands out from afar on the trails.

Technical specifications

Who is it for?

For the rider who heads out every week and wants a hassle-free e-bike whose wear parts remain affordable. It will suit the mountain biker who sets off from home to reach the trails and appreciates the mudguard and pedals that come with it.

The LVR workshop view

Alpha Platinum aluminium, the solid foundation of the Rail+. Trek reserves Alpha Platinum for its most demanding mountain bikes: shaped tubes and carefully finished welds, for a frame that takes repeated knocks. On the Rail+ 5, it gets the same layout as the carbon versions, with a removable RIB 2.0 battery, Motor Armor protection under the motor and adjustable geometry. The extra weight is limited to 1.05 kg compared with the carbon Rail+ 9.7 XT, for a much gentler budget.

Put simply: the Rail+ 5 gives you the Bosch CX motor and 800 Wh battery found across the range, with a simple, reliable Deore and RockShox build.

The 12-speed Shimano Deore drivetrain and its 10-51 cassette cover a wide gear range; with the assist, you stay in easy gears that go easy on the chain. The motor stops helping at 25 km/h, like any European e-bike with a 250 W rated motor. For a hard-ridden e-MTB, we recommend checking chain wear every few months.

The frame features Motor Armor protection under the motor and an adjustable head angle: you can make the bike more stable for the descents of the Caroux or livelier on the garrigue trails. The 2.40 inch Gunnison Elite XR tyres, 29 at the front and 27.5 at the rear from size M, roll efficiently on fast tracks.

Which Rail+ should you choose?

Our take: the Rail+ 5 offers the same Bosch motor and battery as the Rail+ 9.8 GX AXS (24.18 kg in M), for 600 g more. The difference lies in the frame, suspension and controls, not the assist.

Your questions

Why buy from LVR Cycles? In Béziers, our workshop handles Bosch diagnostics, motor updates, chain and cassette replacement and suspension servicing for your Rail+.

Please note that the specifications may be changed without prior notice by the manufacturer, based on the availability of components and other factors.