TREK Rail 9.9 XX1 AXS Gen 4

The Rail 9.9 is our best long-travel electric mountain bike. You get an extra-beefy carbon frame, unbelievably smooth RockShox suspension, SRAM’s best wireless electronic drivetrain and a powerful Bosch smart system Performance Line CX motor with an extra-long range battery and the new Mini Remote. The new System Controller display sits almost flush with the top tube for a sleek look wherever you roll that stays out of the way when you’re riding hard.

Frameset

Frame: OCLV Mountain Carbon
Rear Travel: 150mm
Fork: RockShox ZEB Ultimate, AirWiz, DebonAir spring, Charger 3 RC2 damper, 160mm travel
Rear Shock: RockShox Super Deluxe Ultimate RT, 230 x 57.5mm

Wheels

Front Wheel: Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 29", 6-bolt
Rear Wheel: Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 29", 6-bolt
Front Tyre: Bontrager SE5 Team Issue, Tubeless Ready, 29 x 2.50"
Rear Tyre: Bontrager SE6 Team Issue, Tubeless Ready, 29 x 2.50"
Rim Strips: Bontrager TLR
Tyre Pressure Monitoring: Quarq TyreWiz

E-System

Motor: Bosch Performance Line CX Smart System, 85Nm
Battery: Bosch PowerTube Smart System, 625Wh (S) / 750Wh (M, L, XL)
Charger: Bosch Standard 4A
Controller: Bosch System Controller BRC3100
Remote: Bosch Mini Remote BRC3300
Maximum Assisted Speed: 32km/h, as listed in the manufacturer specifications

Drivetrain

Shifter: SRAM Eagle AXS Wireless, 12-speed
Rear Derailleur: SRAM XX1 Eagle AXS
Crankset: Ethirteen Espec Race Carbon, 165mm
Chainring: SRAM X-SYNC 2, 34T Alloy
Cassette: SRAM Eagle XG-1299, 10-52T, 12-speed
Chain: SRAM XX1 Eagle, 12-speed
Pedals: VP-536 Nylon Platform

Brakes

Brakes: SRAM Code RSC, 4-piston hydraulic disc
Brake Rotors: SRAM HS2, 200mm and 220mm, depending on frame size

Cockpit

Handlebar: Bontrager Line Pro OCLV Carbon, 35mm clamp, 780mm width, 27.5mm rise
Grips: Bontrager XR Trail Elite, Nylon Lock-On
Stem: Bontrager Line Pro, 35mm clamp, 45mm length
Saddle: Bontrager Arvada, Austenite Rails, 138mm width
Seatpost: RockShox Reverb AXS Wireless, 34.9mm

• S: 100mm travel
• M: 150mm travel
• L, XL: 170mm travel

Frame Features

• Removable Integrated Battery (RIB)
• Knock Block 2.0
• Internal cable routing
• Magnesium rocker link
• Motor Armour
• Mino Link adjustable geometry
• ABP suspension system
• Boost 148mm rear spacing
• 12mm rear thru-axle
• Maximum tyre clearance: 29 x 2.60"

Weight

Weight: Approximately 23.6kg (size M).