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Trek Rail 9.9 X01 Electric Mountain Bike 2021

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Rail 9.9 X01 Electric Mountain Bike 2021
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Product ID: 1245657

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Trek Rail 9.9 Electric Mountain Bike 2021

Explore off the beaten track with the Trek Rail 9.9 Electric Mountain Bike, crafted from lightweight OCLV Mountain Carbon and kitted out with all the goods for optimal off-road adventuring. This is a top-end e-MTB hungry for trails, complete with RockShox's ZEB Ultimate fork with chunky 38mm stanchions, and loaded with 160mm of travel to tackle all-mountain terrain. The Bosch Performance CX motor provides up to 250W of assistance to aid tough climbs, and ticks up to 25 km/h should speed be needed. This motor is compact, efficient and light to encourage a natural sensation when pedalling and minimal drag when not, and the Bosch PowerTube 625 battery is entirely charged in under 5 hours with a standard charger should you wish to plan for a ride in advance. Trek's Removable Integrated Battery system is intuitive for easy, tool-free removal when a charge is needed, and well hidden within the frame during use - leaving space for a bottle cage to be mounted too.

Should angles and geometry need refining, the Mino Link enables these to be fine tuned to best fit rider preference. SRAM X01 12-speed components make quiet, clean shifting a cinch, with a multitude of gearing options to suit flowing undulations and steep gradients, and they're tough enough to tackle no-holds-barred trail use. SRAM Code RSC hydraulic disc brakes are responsive for rapid stopping so descents can be handled with improved confidence, making this bike good clean fun on every ride. Seriously good components elevate this bike to new, off-road conquering heights.

Battery Specification

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


  • Trek OCLV Mountain Carbon frame with RIB
  • RockShox ZEB Ultimate DebonAir spring fork with 160mm of travel
  • SRAM X01/XX1 Eagle 12-speed components
  • SRAM Code RSC hydraulic disc brakes
  • 29” wheels with 2.60” tubeless-ready tyres
  • Bontrager Line Elite Dropper seatpost gets the saddle out of the way quickly
  • Bosch Performance CX 250W motor
  • Bosch PowerTube 625 battery

Technical Specification

Frame Trek OCLV Mountain Carbon main frame and stays, Removable Integrated Battery (RIB), tapered head tube, Knock Block, Control Freak internal routing, magnesium rocker link, Motor Armor, Mino Link, ABP, Boost148, 12mm thru-axle, 150mm travel
Fork RockShox ZEB Ultimate, DebonAir spring, Charger 2.1 RC2 damper, e-MTB optimised crown, tapered steerer, 44mm offset, Boost110, 15mm Maxle Stealth, 160mm travel
Rear Shock RockShox Super Deluxe Ultimate RT3, DebonAir spring, Thru Shaft 3-position damper, 230x57.5mm
Headset Trek Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8" top, 1.5" bottom
Stem Bontrager Line Pro, 35mm, Knock Block, Blendr compatible, 0 degree
Handlebar Bontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise
Grips Bontrager XR Trail Elite, alloy lock-on
Front Brake SRAM Code RSC hydraulic disc
Rear Brake SRAM Code RSC hydraulic disc
Brake Levers SRAM Code RSC
Rear Derailleur SRAM X01 Eagle
Shift Levers SRAM X01 Eagle, 12-speed
Chain SRAM XX1 Eagle, 12-speed
Cassette SRAM XG-1295 Eagle, 10-52, 12-speed
Crankset E*thirteen E*spec Race carbon, 34T, 165mm crank length
Front Wheel Bontrager Line Elite 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110
Rear Wheel Bontrager Line Elite 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, SRAM XD driver, Boost148
Front Tyre Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewall, aramid bead, 60 tpi, 29x2.60" clincher
Rear Tyre Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewall, aramid bead, 60 tpi, 29x2.60" clincher
Saddle Bontrager Arvada, austenite rails, 138mm width
Seatpost Bontrager Line Elite Dropper, internal routing, 31.6mm, travel - S 100mm / M 150mm / L/XL 170mm
Pedals Trek VP-536 nylon platform
Charge time 100% charge, 4.9 hours with Standard Charger
Motor Bosch Performance CX, magnesium motor body, 250 watt, 75 Nm, 25km/h
Ui/Remote Bosch Kiox with Anti-theft solution
Battery Bosch PowerTube 625
Charger Bosch standard 4A (220-240 V) charger
Weight Limit Maximum total weight limit is 136kg (300lbs) (combined weight of bicycle, rider and cargo)
Manufacturer Claimed Weight 22.42kg / 49.43lbs (with tubes, size M)

Trek Rail 9.9 X01 Electric Mountain Bike 2021 Sizing

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