Trek rail 9.9 cxr gen 4

Rail 9.9 CXR is a race-ready long-travel e-bike thats ready to go full gas right off the the starting line. It features our best carbon frame, smooth RockShox suspension, and top-tier Shimano XTR drivetrain. But the real show stealer on this powerhouse is the limited-edition Bosch Performance Line CXR motor that accelerates faster and offers sustained power for ripping through rock gardens without pedalling. Its equipped with an extra-long range battery and smart system, plus the new Mini Remote and System Controller display that sits flush with the top tube and pairs with the eBike Flow app to give you activity tracking, navigation, and Bluetooth connectivity.

• 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
• Boschs limited-edition CXR motor gives you more power out of the gate and keeps it sustained for ripping through rock gardens when you cant pedal
• The new System Controller shows your currently-selected assist level and remaining battery level. Its neatly integrated into the top tube for maximum protection and a sleek look
• Boschs new smart system gives you all the same power and responsiveness with a new discrete Mini Remote thats streamlined with just the controls you need at your fingertips to toggle through assist levels or change to walk mode
• TyreWiz and AirWiz let you confirm your tires, fork, and shock are at the right pressure at a glance. No more getting the pump or gauge out just to check

Performance Line CX Race motor

The limited-edition Race motor delivers explosive acceleration, full throttle jump out of corners, and the fastest possible ride. The Performance Line CX Race Edition is the perfect choice for e-MTB racers and expert riders who want more power off of the starting line.

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 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, its wireless and connects with your System Controller via Bluetooth

Bosch System Controller

The System Controller gives you a quick overview of your assist mode and battery level without distracting you from the ride. Its integrated into the top tube so its 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 tire 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 ride.

Active Braking Pivot

Active Braking Pivot allows our engineers to tune how the suspension reacts to acceleration and braking forces independently. That means you get more confident control when you need it most.

Frame	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, 34.9mm seat tube, magnesium rocker link, Motor Armor, Mino Link, ABP, Boost148, 12mm thru axle, 150mm travel
Fork	RockShox ZEB Ultimate, AirWiz, DebonAir spring, Charger 3 RC2 damper, 1.8 oversized tapered steerer, eMTB optimized crown, 44mm offset, Boost110, 15mm Maxle Stealth, 160mm travel
Shock	RockShox Super Deluxe Thru Shaft, AirWiz, 230mm x 57.5mm
Wheel Front	Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle, 29 /
Wheel Rear	Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148, 12mm thru axle, 29
Tire	Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewalls, aramid bead, 120 tpi, 29x2.50 // Bontrager SE6 Team Issue, Tubeless Ready, Core Strength sidewalls, aramid bead, 120 tpi, 29x2.50
Tire Part	Bontrager TLR sealant, 6oz // Quarq TyreWiz tire pressure monitors
Rim Strip	Bontrager TLR
Skewer Rear	Bontrager Switch thru axle, removable lever
Shifter	Shimano XTR M9100, 12 speed
Rear Derailleur	Shimano XTR M9100, Shadow Plus, long cage, 51T max cog
Crank	E*thirteen E*spec Race carbon, 34T, 165mm length
Cassette	Shimano XTR M9101, 10-51, 12 speed
Chain	Shimano Dura-Ace/XTR M9100, 12 speed
Chainring	E*thirteen E*spec, 34T alloy, 55mm chainline
Brake	Shimano XTR M9120 4-piston hydraulic disc // Shimano XTR M9120 4-piston hydraulic disc
Brake Rotor	Shimano RT86, 6-bolt, 203mm
Pedal	VP-536 nylon platform
Saddle	Bontrager Arvada, austenite rails, 138mm width
Seatpost	Bontrager Line Elite Dropper, 100mm travel, MaxFlow, internal routing, 34.9mm, 345mm length
Seat Collar	Bolt-on, 36.4mm
Handlebar	Bontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise, 780mm width
Stem	Bontrager Line Pro, 35mm, Blendr compatible, 0 degree, 45mm length
Grips	Bontrager XR Trail Elite, nylon lock-on
Battery	Bosch PowerTube 625Wh, smart system
Controller	Bosch System Controller BRC3100, smart system
Motor	Bosch Performance Line CX Race Edition, smart system, magnesium motor body, 85 Nm, 20 mph or 32 km/h max assist (25 km/h max assist in EU and APAC)
Charger	Bosch standard 4A, 110V, smart system

Geometry Chart