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Trek Rail 5 625w Gen 2 Electric Mountain Bike


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Rail 5 625w Gen 2 Electric Mountain Bike

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Product ID: 1475889

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Built, Checked, Tuned and Tested

All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.

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Trek Rail 5 625w Gen 2 Electric Mountain Bike

The Trek Rail 5 625w Electric Mountain Bike is a great value, enduro-style machine that combines an outstandingly able chassis with reliable components and a powerful electric motor for assistance when required.

The Alpha Platinum Aluminium frame offers 150mm of trail-taming suspension to soak up the hits, big or small, via the RockShox Deluxe Select+ shock, whilst the Mino link provides the opportunity to fine-tune the frame’s geometry to better suit the terrain or rider. The front end has 160mm of travel thanks to the RockShox 35 Gold RL fork although the frame is rated for up to 170mm if even more capability is required.

With a 250W, 85Nm Bosch Performance Line CX motor in the bottom bracket to add plenty of assistance (up to 15.5 mph / 25 km/h), getting back to the top of the hill for another lap of the trail is light work and as the battery has a 625Wh capacity there are miles of fun available. eMTB mode adjusts the assistance automatically to suit the terrain in order to maximise the power and also serves well as a set-and-forget option so that there is no need for constant adjustments - just enjoy the ride. The battery is housed discretely in the down tube but can be easily removed for charging or travel if needed without recourse to tools.

Shimano’s evergreen 12-speed Deore drivetrain suits the bike well; performing fantastically and reliably ride after ride with quick shifts and a wide range of gears on offer. 4-piston brakes ensure that the speed comes with a healthy dose of control, affording tireless, fade-free performance on every descent.

Battery Specification

  • Maximum assist: 250W
  • Motor weight: 2.9kg
  • Battery Power: Approximately 625Wh


  • Trek Alpha Platinum Aluminium frame with RockShox Deluxe Select+ shock and 150mm travel
  • RockShox 35 Gold RL fork, 160mm travel
  • 29" wheels with 2.50" Bontrager XR4 Comp tyres
  • Shimano Deore M6100, 12-speed groupset+
  • Shimano 4-piston MT420 calliper hydraulic disc brakes
  • Bontrager Line Dropper

Technical Specification

Frame Trek Alpha Platinum Aluminium, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, magnesium rocker link, Motor Armour, Mino Link, ABP, Boost148, 12mm thru-axle, 150mm travel
Fork RockShox 35 Gold RL, DebonAir spring, Motion Control damper, lockout, tapered steerer, 44mm offset, oversized crown for eMTB, Boost110, 15mm Maxle Stealth, 160mm travel
Rear Shock RockShox Deluxe Select+, 230x57.5mm
Headset Trek Knock Block Integrated, 58° radius, cartridge bearing, 1-1/8" top, 1.5" bottom
Stem Bontrager Rhythm Comp, 31.8mm, Knock Block, 0°, 50mm length
Handlebar Bontrager alloy, 31.8mm, 15mm rise, 750mm width
Grips Bontrager XR Trail Comp, nylon lock-on
Front Brake Shimano 4-piston MT420 caliper hydraulic disc
Rear Brake Shimano 4-piston MT420 caliper hydraulic disc
Brake Levers Shimano MT4100
Rear Derailleur Shimano Deore M6100, long cage
Shift Levers Shimano Deore M6100, 12-speed
Chain Shimano Deore M6100
Cassette Shimano Deore M6100, 10-51, 12-speed
Crankset E*thirteen E*spec Plus, 34T, 165mm length
Front Wheel Alex MD35, tubeless compatible, 32-hole, 35mm width, Presta valve rim with Bontrager sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru-axle hub
Rear Wheel Alex MD35, tubeless compatible, 32-hole, 35mm width, Presta valve rim with Bontrager sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12mm thru-axle
Front Tyre Bontrager XR4 Comp, wire bead, 30 tpi, 29x2.60" clincher
Rear Tyre Bontrager XR4 Comp, wire bead, 30 tpi, 29x2.60" clincher
Saddle Bontrager Arvada, steel rails, 138mm width
Seatpost Bontrager Line Dropper, internal routing, 31.6mm, 100mm travel, (S), 125mm (M, L, XL)
Manufacturer's Claimed Weight 23.88kg / 52.65lbs - size medium
Motor Bosch Performance Line CX, magnesium motor body, 250W, 85Nm, 25km/h
Ui/Remote Purion with walk assist
Battery Bosch PowerTube 625Wh
Charger Bosch compact 2A, 100–240V, smart system
Electric assisted speed limit 15.5 mph / 25 km/h

Built, Checked, Tuned and Tested

All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.

All bikes collected from our shop, are built, tested and ready to ride.

Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.

If you require any assistance please contact our Customer Care team.

Trek Rail 5 625w Gen 2 Electric Mountain Bike Sizing

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