Trek Rail 9.9 CXR Gen 4

$13,299.99

Trek Rail 9.9 CXR Gen 4

$13,299.99

Rail 9.9 CXR is a race-ready long-travel e-bike that’s 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. It’s 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.

Rail 9.9 CXR is a race-ready long-travel e-bike that’s 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. It’s 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.

Description

It’s right for you if…
You want seriously fast acceleration and the best long-travel e-MTB you can find. Components matter to you, and you want the most adjustability, smoothest performance, longest range, and most high-tech assist you can get. You love customization and want all of the cool features of Bosch’s smart system.

The tech you get

An upgraded OCLV Mountain Carbon frame with longer reach and oversized head tube and seat tube for maximum strength. An extra-long-range 750Wh battery, ultra-adjustable RockShox ZEB Ultimate fork, RockShox Super Deluxe Ultimate Thru Shaft shock, and ultra-responsive Shimano XTR 1×12 drivetrain. Bosch’s new limited-edition Performance Line CXR motor with faster acceleration and extended boost, a new Mini Remote, and Bluetooth® System Controller display that’s integrated into the top tube.

The final word

Rail 9.9 CXR is all about power. It combines top-shelf tech with Bosch’s ultra-fast accelerating, limited-edition, Performance Line CXR motor for cruising out of corners at top speed, and their biggest battery possible to power you, lap after lap. RockShox’s best enduro fork, the super-refined shifting of XTR, an updated frame, and AirWiz pressure monitoring come together to make it the full package for e-MTB racing.

Why you’ll love it

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

Bosch’s limited-edition CXR motor gives you more power out of the gate and keeps it sustained for ripping through rock gardens when you can’t 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

Bosch’s new smart system gives you all the same power and responsiveness with a new discrete Mini Remote that’s 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, it’s 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. 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 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.

Bosch eBike Flow app
The new eBike Flow app turns your ride into a personalized experience. Use it to customize your motor’s assist behavior, track your ride stats, and integrate your data with apps like Strava and Apple Health. There’s even handy features like navigation and service reminders.

Shimano XTR
Designed to meet the highest level of competitive mountain bike racing needs, with second to none performance and experience, Shimano XTR M9100 brings lightweight, high-end versatility to XC, enduro, and marathon racing.

Frameset
Frame OCLV Mountain Carbon main frame
Fork RockShox ZEB Ultimate
Shock RockShox Super Deluxe Thru Shaft
Max compatible fork travel 170mm
Wheels
Front Wheel Bontrager Line Pro 30
Rear Wheel Bontrager Line Pro 30
Rear Skewer Bontrager Switch thru axle
Tires Bontrager SE5 Team Issue, Bontrager SE6 Team Issue
Tire Part Bontrager TLR sealant, Quarq TyreWiz tire pressure monitors
Max tire size Frame: 29×2.60″, Fork: See manufacturer
Drivetrain
Shifter Shimano XTR M9100
Rear derailleur Shimano XTR M9100
Crank Ethirteen Espec Race carbon
Chainring Ethirteen Espec
Cassette Shimano XTR M9101
Chain Shimano Dura-Ace/XTR M9100
Pedal VP-536 nylon platform
Components
Saddle Bontrager Arvada
Seatpost Bontrager Line Elite Dropper
Handlebar Bontrager Line Pro
Grips Bontrager XR Trail Elite, nylon lock-on
Stem Bontrager Line Pro
Brake Shimano XTR M9120 4-piston hydraulic disc
Brake Rotor Shimano RT86, 6-bolt, 203mm
Accessories
Battery Bosch PowerTube 625Wh (Size: S), Bosch PowerTube 750Wh (Size: M, L, XL)
Charger Bosch standard 4A, 110V
Controller Bosch System Controller BRC3100 (Size: S, M, L, XL), Bosch Mini Remote BRC3300 (Size: S, M, L, XL)
Motor Bosch Performance Line CX Race Edition
Weight M – 23.05 kg / 50.82 lbs (with TLR sealant, no tubes)

Additional information

Brands

Trek

Frame type

Step-over

Height range

Tiny riders and kids – Under 5'4", Average height riders – 5'5" to 6'1", Tall riders – Above 6'1"

Style

Mountain eBike

Rider size

Average size rider – Under 300lbs

Color

Deep Smoke, Lava

Trek Rail 9.9 CXR Gen 4
$13,299.99