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Visible from afar in the woods, the Trek Rail+ 8 in Powersurge, a fluorescent yellow-green, is an Alpha Platinum aluminium electric mountain bike with 160 mm of travel. Its Bosch Performance Line CX motor, adjustable up to 100 Nm via the app, draws on an 800 Wh PowerTube battery. Trek quotes 25.08 kg in size M.
| Frame | Alpha Platinum aluminium, removable RIB 2.0 battery, Motor Armor, adjustable head angle, Mino Link, adjustable suspension leverage, UDH, Boost148 |
| Motor | Bosch Performance Line CX, 85 Nm (up to 100 Nm via the eBike Flow app), 250 W rated, assist up to 25 km/h |
| Battery | Integrated, removable Bosch PowerTube 800 Wh (RIB 2.0) |
| Controls / display | Bosch System Controller BRC3100, smart system |
| Suspension | RockShox ZEB Select Charger RC 160 mm / RockShox Super Deluxe Select RT 205 x 65 mm, 160 mm |
| Drivetrain | Shimano 1x12: XT M8100 derailleur, Deore M6100 10-51 cassette, SLX chain |
| Brakes | SRAM DB 8 4-piston hydraulic, CenterLine 200 mm rotors |
| Wheels / tyres | Bontrager Line Comp 30 / Brevard Pro XR 29 x 2.50 front, 27.5 x 2.60 rear (27.5 in S) |
| Cockpit | Bontrager Line alloy 35 mm handlebar, 780 mm, 27.5 mm rise, Elite 45 mm stem |
| Saddle / seatpost | Bontrager Verse P3 / Line Dropper 150 to 200 mm depending on size |
| Weight | 25.08 kg in size M (Trek figure, with tubeless sealant) |
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At a glance
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For the mountain biker who often rides alone or in a small group, early in the morning or late in the day, and wants to be easily spotted by other trail users. It will also suit the rider looking for a tough e-MTB for mountain loops.
Alpha Platinum aluminium, built for full power. The Rail+ 8 keeps the aluminium frame of the Rail+ 5 but steps up a notch on the parts that take the hits: a ZEB fork with 38 mm stanchions, wider Line Comp 30 rims and Brevard Pro XR tyres. The welded Alpha Platinum alloy, protected by Motor Armor, handles the 85 Nm of the Bosch CX and the impacts of the terrain without flinching.
| Carbon Rail+ (9.7 / 9.8) | Aluminium Rail+ (5 / 8) | Carbon Slash+ (TQ) | |
| Frame | OCLV Mountain main frame | Alpha Platinum | OCLV Mountain |
| Drive system | Bosch CX, PowerTube 800 Wh | Bosch CX, PowerTube 800 Wh | TQ HPR60, 580 Wh |
| Weight (M) | 23.73 to 24.18 kg | 24.78 to 25.08 kg | 21.58 to 21.83 kg |
| What it means | Lighter chassis, same motor | Gentler budget, robust frame | Gentler assist, livelier bike |
Put simply: the Rail+ 8 is the aluminium Rail+ equipped for enduro, with the same RockShox suspension as the carbon Rail+ 9.7 XT; it weighs 1.35 kg more than the latter in M.
The Bosch CX delivers 85 Nm out of the box, which the eBike Flow app lets you push to 100 Nm; its eMTB mode adapts the assist to the force you put through the pedals. On the steep ramps leading up to the ridges of the Montagne Noire, that torque keeps your momentum going. The assist remains capped at 25 km/h, the European rule for a 250 W rated motor.
The Line Dropper post ranges from 150 mm in S to 200 mm in L: the saddle drops right out of the way for descending. The RIB 2.0 system lets you take the 800 Wh battery out of the frame, useful for charging it in a heated room in winter rather than in a cold garage.
| Model | Motor / battery | Rear / front travel | Drivetrain | Weight (M) |
| Rail+ 5 | Bosch CX / 800 Wh | 160 / 160 mm | Shimano Deore 12-speed | 24.78 kg |
| Rail+ 8 | Bosch CX / 800 Wh | 160 / 160 mm | Shimano XT / Deore 12-speed | 25.08 kg |
| Rail+ 9.7 XT | Bosch CX / 800 Wh | 160 / 160 mm | Shimano XT / SLX 12-speed | 23.73 kg |
| Rail+ 9.8 XT Di2 | Bosch CX / 800 Wh | 160 / 160 mm | Wireless Shimano XT Di2 | 23.98 kg |
Our take: at 25.08 kg in M, this Rail+ 8 is 1.1 kg heavier than the carbon Rail+ 9.8 XT Di2 (23.98 kg); that is the price of an aluminium frame and a simpler spec, with an identical drive system.
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LVR sizing advice The dropper post grows with the frame: 150 mm in S, 170 mm in M, 200 mm above that. Size S rolls on two 27.5 inch wheels, easier to handle for a smaller rider; from M upwards, it runs a 29 front and 27.5 rear setup.
Source: Trek size guide. Bike fitting available in our Béziers shop. |
| Can the motor torque be adjusted? | Yes, from 85 to 100 Nm in the Bosch eBike Flow app. |
| Where should the battery be charged in winter? | In a heated room; the removable RIB 2.0 battery comes out of the frame easily. |
| Which sizes for this colourway? | S, M and L, from 155 to 188 cm according to the Trek guide. |
| Does the fluorescent green fade? | It is a lacquered paint; a protective film preserves its brightness against rubbing. |
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The LVR Cycles verdict A tough, powerful aluminium Rail+, made visible everywhere by its fluorescent green. A solid base for riding often in the mountains.
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Why buy from LVR Cycles? In Béziers, we set the torque of your Bosch CX in the app, prepare the suspension for your weight and advise you on charging the battery.
Please note that the specifications may be changed without prior notice by the manufacturer, based on the availability of components and other factors.
Data sheet
Specific References
Aluminium full-suspension electric mountain bike Trek Rail+ 8 Powersurge: Bosch CX 800 Wh, ZEB 160 mm, 25.08 kg
