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Trek Rail 5 625W SX Eagle Electric Mountain Bike

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Rail 5 625W SX Eagle Electric Mountain Bike
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Product ID: 1204196

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Trek Rail 5 625W SX Eagle Electric Mountain Bike

With the capabilities of a non-electric mountain bike, plus an added boost to help you up the climbs after those fast, fun descents, the Trek Rail 5 625W SX Eagle Electric Mountain Bike will have you riding further, faster. The light yet durable Alpha Platinum Aluminium frame is paired to a RockShox 35 Gold RL fork and gives you 160mm and 150mm of bump-smoothing travel front and rear respectively so you can hit the roughest trails at speed.

Featuring much of the technology found on SRAM's top-end groupset, SX Eagle 12-speed offers smooth shifting performance and has a wide 11-50 tooth cassette and 36T chainring in a 1x setup. The dropper post, with frame size-specific travel, means you can quickly move the saddle out of the way as you hit drops, jumps and steep descents. Bontrager hubs and Alex rims make a strong wheel build and the bike rolls on Schwalbe's Nobby Nik Evo 29" tyres, great all-rounders that are easy to convert to tubeless and provides excellent protection against punctures.

Housed inside the down tube is the 625Wh battery which powers the Bosch Performance Line CX motor mounted in the bottom bracket. Smaller and lighter than previous models, sleek aesthetics are retained, and when the motor is not in use or you hit the 25km/hour limit, the bike won't feel overly heavy or sluggish. A Bosch Purion display allows complete control overriding modes from its handlebar position and you can view all your essential data.

Battery Specification

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


  • The Rail 5 shreds just as hard as its non-electric brethren, plus it powers you right back up the mountain – no shuttle or lift necessary
  • Trek's Removable Integrated Battery (RIB) system looks great and is super user-friendly: it fully hides the battery in the frame for protection, makes it easy remove the battery without tools and lets you mount a water bottle cage
  • Equipped with an external charging port for easy charging on or off the bike
  • Made with the same exclusive frame tech as the Remedy and Slash models, like Mino Link adjustable geometry, a Straight Shot down tube for extra stiffness and Active Braking Pivot (ABP)
  • 1x12-speed SRAM SX Eagle drivetrain

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, e-MTB optimised, tapered steerer, 44mm offset, Boost110, 15mm Maxle Stealth, 160mm travel
Rear Shock RockShox Deluxe RL, 230x57.5mm
Stem Bontrager Rhythm Comp, 31.8mm, Knock Block, 0 degree, 50mm length
Handlebar Bontrager alloy, 31.8mm, 15mm rise, 750mm width
Grips Bontrager XR Trail Comp, nylon lock-on
Front Brake Tektro HD-M745 4-piston hydraulic disc / Tektro, 203mm, 6-bolt rotor
Rear Brake Tektro HD-M745 4-piston hydraulic disc / Tektro, 203mm, 6-bolt rotor
Brake Levers SRAM NX Eagle
Front Derailleur N/A
Rear Derailleur SRAM SX Eagle, 12-speed
Shift Levers SRAM SX Eagle single-click, 12-speed
Cassette SRAM PG-1210 Eagle, 11-50, 12-speed
Crankset SRAM X1 1000, 36T chainring, 165mm length
Front Wheel Bontrager sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru-axle hub / Alex MD35, tubeless-ready, 32-hole, 35mm width, Presta valve rims
Rear Wheel Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12mm thru-axle hub / Alex MD35, tubeless-ready, 32-hole, 35mm width, Presta valve rims
Front Tyre Schwalbe Nobby Nik Evo, 29", tubeless-ready clincher
Rear Tyre Schwalbe Nobby Nik Evo, 29", tubeless-ready clincher
Saddle Bontrager Arvada, steel rails, 138mm width
Seatpost Size S - TranzX JD-YSP18 dropper, 100mm travel, internal routing, 31.6mm, 361mm length / Size M, L, XL - TranzX JD-YSP18, 130mm travel, internal routing, 31.6mm, 425mm length
Pedals VP-536 nylon platform
Motor NEW Bosch Performance Line CX, 250 Watt, 75Nm, magnesium body, 25 km/h max assist
Ui/Remote Bosch Purion
Battery Bosch PowerTube 625Wh
Charge time 100% charge, 4.9 hours with Standard Charger
Manufacturer Claimed Weight 23.53kg / 51.88lbs (with tubes)

Trek Rail 5 625W SX Eagle Electric Mountain Bike Sizing

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