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Trek Rail 9.9 X01 AXS Electric Mountain Bike 2021
Specced with top-tier components, the Trek Rail 9.9 X01 AXS Electric Mountain Bike is a serious contender when it comes to ripping up trails with some added assistance. The OCLV Mountain Carbon chassis keeps weight down and stiffness high, with the Bosch PoweTube 625 battery slotting neatly into the downtube and boasting simple removal for fuss-free charging, without the need for tools. There's room for a bottle cage to be fitted alongside this battery, which is completely charged in just under five hours. Bosch's lightest, smallest and most powerful motor, the Bosch Performance CX, lends a maximum of 250w at up to 25km/h to alleviate uphill sections and operates with minimal drag when not in use.
Geometry can be slightly adjusted to best fit rider preference using the Mino Link, whilst a tasty 160mm of travel is provided by the premium RockShox ZEB Ultimate fork and, courtesy of the RockShox Super Deluxe Ultimate shock, 150mm to the rear. This rear shock is complete with a RE:aktiv thru shaft to amp up response speed and track terrain more efficiently, ensuring trail chatter is diminished by this impressive suspension set up.
The completely wireless SRAM Eagle AXS 12-speed drivetrain features an extra-low 52-tooth climbing gear to ensure smooth pedal strokes prevail even over testing gradients - resulting in optimised, consistent motor function. Shifting is clean, sharp, smart and refined whilst stopping power is certain thanks to SRAM Code RSC hydraulic disc brakes. The combination of wide rims and burly tyres mean fast-rolling performance and sure-footed traction in rough corners, whilst the Bontrager SE5 Team Issue tyres can be run tubeless to eliminate pinch flats at low pressures.
Battery Specification
- Maximum assist: 250w
- Motor weight: 2.9kg
- Battery Power: Approximately 625Wh
Highlights
- Trek OCLV Mountain Carbon frame with RIB
- RockShox ZEB Ultimate, DebonAir spring fork with 160mm travel
- SRAM X01 Eagle AXS wireless 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 AXS |
| Shift Levers | SRAM Eagle AXS, wireless, 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 |
| Front Wheel | Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110 |
| Rear Wheel | Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, 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 | RockShox Reverb AXS, wireless, 31.6mm |
| Pedals | VP-536 nylon platform |
| Claimed Manufacturers Weight | Size M - 22.47kg / 49.54lbs (with tubes) |
| Charge time | 100% charge, 4.9 hours with Standard Charger |
| Motor | Bosch Performance CX, magnesium motor body, 250 watts, 75 Nm, 25km/h |
| Ui/Remote | Bosch Kiox with Anti-theft solution |
| Battery | Bosch PowerTube 625 |
| Charger | Bosch standard 4A (220-240 V) charger |