Trek 2024 Rail 9.9 X0 AXS T-Type Gen 4

From €11,299.00
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XL
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The Rail 9.9 is our best long-travel electric mountain bike. You get an extra-beefy carbon frame, an 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.

You want to spare no expense on your e-MTB experience. You want the most adjustability, smoothest performance, longest range and most high-tech electric assist you can get. You love customisation and want all the cool features of the Bosch smart system, and you want wireless electronic shifting.

An upgraded OCLV Mountain Carbon frame with longer reach and oversized head tube and seat tube for maximum strength. An extra-long-range 750 Wh battery, ultra-adjustable RockShox ZEB Ultimate fork, RockShox Super Deluxe Ultimate Thru Shaft shock and SRAM's wireless X0 AXS transmission. You get Bosch's smart system Performance Line CX with a new Mini Remote and Bluetooth® System Controller display that's integrated into the top tube, plus AirWiz pressure monitoring.

The Rail 9.9 is all about top-shelf tech. The best enduro fork from RockShox, Bosch's biggest battery, the smooth shifting of X0 AXS, an updated frame and AirWiz pressure monitoring, plus Bosch's latest tech with smart system.
- The Carbon Rail Gen 4 has the same enduro-inspired geometry and huge battery as the previous generation, but now it has a pocket in the top tube that makes Gen 4 compatible with Bosch's integrated System Controller and Mini Remote
- Its clean cockpit is minimalist and sleek, and the smart system makes it easy to add a display if you want more data
- Intelligent eMTB and Tour+ modes automatically adjust the assist based on your input to give you just the right amount of power for your ride
- SRAM's direct-mount T-Type wireless transmission delivers next-level performance with precise shifts under load and unmatched durability
- 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

Removable Integrated Battery
RIB is a one-piece battery and cover with a built-in handle that can easily be removed and re-installed in the frame with no tools and no hassle. It's the most convenient way to remove your battery for transport, security or just easier charging.

Bosch Performance Line CX motor
The Bosch Performance Line CX sets the standard for eMTB performance with up to 85 Nm of torque and an intelligent eMTB mode with Extended Boost that automatically adjusts the amount of assist based on the terrain.

Bosch Mini Remote
The compact, ergonomic Mini Remote lets you easily change assist level, activate Walk mode, or turn on optional lights, all without moving your hand off the handlebar. Plus, it's wireless and connects with your System Controller via Bluetooth

Transition to transmission
The SRAM Eagle T-Type transmission mounts directly to the frame, skipping that pesky derailleur hanger of yesteryear. This makes for a more robust system that's not only cleaner-looking, it's also more precise under load and easier to set up.

Bosch System Controller
The System Controller gives you a quick overview of your assist mode and battery level without distracting you from the ride. It's integrated into the top tube so it's out of the way but still easy to see with LED indicators. It also connects to the eBike Flow app via Bluetooth for accessing ride stats and performing system updates.

RockShox AirWiz and Quarq TireWiz
TyreWiz monitors your tyre pressure while AirWiz monitors your fork and shock pressure. Set your desired pressure in the SRAM AXS app and then just check the lights before each ride - red means you need a pump, green means go and ride.

Frame Size XL, UNI, Carbon, OCLV Mountain Carbon main frame, 1.8'' lower head tube, Bosch System Controller-compatible, Removable Integrated Battery (RIB), Knock Block 2.0, guided internal routing, 34.9 mm seat tube, magnesium rocker link, Motor Armour, Mino Link, ABP, Boost148, 12 mm thru-axle, 150 mm travel
Wheel Size Front 29
Wheel Size Rear 29
Fork RockShox ZEB Ultimate, AirWiz, DebonAir spring, Charger 3 RC2 damper, 1.8" oversized tapered steerer, eMTB optimised crown, 44 mm offset, Boost110, 15 mm Maxle Stealth, 160 mm travel
Fork Unknown
Gears DERAILLEUR, Sram, 1 Gears
Tyres BONTRAGER,
Pedals UNBRANDED,
Wheels BONTRAGER, Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15 mm thru-axle, 29" Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, SRAM XD driver, Boost148, 12 mm thru-axle, 29"
Shifters SRAM, SRAM AXS POD Ultimate, paired with dropper // SRAM AXS POD Ultimate, paired with dropper,
Kickstand UNKNOWN, Unknown
Front Brake SH, SRAM Code Silver 4-piston hydraulic disc // SRAM Code Silver 4-piston hydraulic disc SRAM 6-bolt, 200 mm Max brake rotor size, Disc brake with hydraulic actuation
Rear Brake SH, SRAM Code Silver 4-piston hydraulic disc // SRAM Code Silver 4-piston hydraulic disc SRAM 6-bolt, 200 mm Max brake rotor size, Disc brake with hydraulic actuation
Rear Derailleur ,
Crankset SRAM, SRAM X0 Eagle, 160 mm length
Chain SRAM, SRAM X0 Eagle, T-Type, 12-speed
Handlebar BONTRAGER, Bontrager RSL Integrated handlebar/stem, OCLV Carbon, 27.5 mm handlebar rise, 820 mm width, 0-degree stem rise, 45mm stem length
Bartape / Grips BONTRAGER
Seatpost ROCKSHOX
Saddle BONTRAGER, Bontrager Arvada, austenite rails, 138 mm width
Front Light UNKNOWN
Rear Light UNKNOWN
Battery Capacity 625
Battery Brand BOSCH
Battery Model BOSCH
Drivetrain Brand Bosch
Sensor Type PEDALFORCE
Colours DEEP SMOKE, LAVA, MERCURY, PENNYFLAKE
Sizes L, M, S, XL
Brand Trek
Model Year 2024
Barcodes 601842905142, 601842905159, 601842905166, 601842905173, 768682549421, 768682549445, 768682549582, 768682549667, 768682549728, 768682570081, 768682570104, 768682570142, 768682570265, 768682570388, 768682570401, 768682570449
SKUs / Part Numbers 5301242, 5301243, 5301244, 5301245, 5301246, 5301247, 5301248, 5301249, 5301250, 5301251, 5301252, 5301253, 5315254, 5315255, 5315256, 5315257

Please note: Manufacturers can sometimes change the specification of the products from time to time.

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