Trek 2024 Rail 9.9 CXR Gen 4

£12,950.00
S
M
L
XL

The Rail 9.9 CXR is a race-ready long-travel e-bike that's ready to accelerate to the full 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

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 customisation and want all of the cool features of Bosch's smart system.

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, ultra-responsive Shimano XTR 1x12 drivetrain and burly but light carbon wheels. 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.

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.
- 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
- 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 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 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 that your tyres, 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 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.

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.

Order your new bike from us and one of our team will hand deliver it to your home or place of work. We use a specialist 'white glove' courier trained by ourselves.

For peace of mind, every bike comes fully assembled and PDI’d by one of our Cytech mechanics – not your usual bike in a box delivery as some other shops offer.

Due to current demand for our bikes, please allow a minimum of 5-7 working days for delivery. We will call you to arrange a mutually convenient time.

Delivery Type GB Mainland (England, Scotland, Wales)

*Bikes over £2000 - Ring for cost

Click & Collect bikes of any value - FREE

Bikes less than £2000 - Ring for cost

Delivery outside of Great Britain - We do not offer delivery outside of Great Britain through this website.

Big Bear Bikes now offer a free Click & Collect service from our Pickering store for all your bike and accessory orders.

Our Click & Collect service offers all the benefits of shopping online combined with exceptional retail experience in our store. Simply order your items, select Click & Collect and pick up your item at a time that's convenient for you. Best of all the service is completely FREE!


1. Add your items to your basket

Use our website to browse our catalogue of products with stock availability. When you find the item you want, simply add it to your basket like you usually would.

2. Checkout using Click & Collect

Scroll down and choose Click & Collect as your delivery method.

3. Collect your goods

Once your order has been received, we will carefully source and prepare your goods for collection. Once ready, the store will contact you via text and/or email to confirm that the items are ready to collect. When collecting your order, you will need to bring the payment card you used to purchase the item, together with one form of photo ID – either a current driving licence or current passport.


Frequently Asked Questions

When can I collect my order?

We will notify you via email and/or text when your order is ready to collect.

If you order a bike, we will telephone you and arrange a collection appointment.

How will I know when my order is ready?

For non-bike orders we will send you an e-mail and/or text to let you know when your order is ready to collect. If you’ve ordered a bike, we will contact you by telephone once you have placed your order to arrange a collection time.

What do I need to collect my order?

Please bring with you your confirmation e-mail, the payment card you used to make the purchase and a current form of photo ID.

We will hold your order in store for 10 days. If you have any problems with getting to the store to collect your order please feel free to contact us and we will happily extend this time where possible.

How do I cancel/change my order?

If you wish to cancel your order or make any changes, please contact us on 01751 474220. Please note, full refunds will be made via the original transaction made with our online team.

How do I return my order?

Our normal returns policy applies to all Click & Collect orders - for more information see our returns policy. You can also return directly to the store.

GET UP TO 39% OFF THE COST OF YOUR NEW BIKE: HAPPY CYCLE TO WORK DAY

The UK’s Cycle To Work Scheme has been in place for over 20 years now, offering fantastic discounts to tens of thousands of riders.

The Cycle To Work Scheme, is offered through many thousands of employers in the UK and applies to bikes of all types, whether it’s road, MTB or hybrid, and that includes e-bikes too.


About the Cycle To Work Scheme

Introduced in 1999, the scheme aims to encourage employees to commute on their bike for environmental, traffic congestion and health reasons. It also enables companies to demonstrate that they’re looking after the wellbeing of their people.

Obviously, you’re supposed to use the bike for commuting – and we are massive supporters of getting to work this way – but it’s fine to buy a bike that’s built for the trails. Your employer owns the bike until you pay the final ownership fee, which is based on the “fair market value” of it at the end of that period.

As well as your new bike, you can use the scheme to buy accessories, such as helmets and bags, though these have to be ostensibly for your commute. So, no full face masks, for example. If you don’t have a lock, we strongly advise that you get one along with your bike as you’re liable for the Cycle To Work payments, even if it gets stolen while you’re paying it off.


How does the Cycle To Work Scheme work?

This is a salary sacrifice scheme for people aged 18 and over where the monthly payment for your bike is taken out before tax and National Insurance are deducted. Because your contribution is taken before tax, you pay off more per month for less. So, for a bike costing £1,200, £100 is taken from your salary every month but it only costs you £68 because the other £32 would have normally gone to the tax man, right? So, you pay 12 instalments of £68 and a final ownership fee of £300, totalling £1,116. If your salary puts you in the higher tax brackets, you actually save more but you get the gist.


I’m interested. What do I need to do?

Firstly, find out which scheme your employer is enrolled in and therefore where you can buy your bike from. We work with a number of Cycle To Work providers, including cyclescheme.co.uk, cycleplus and Bikes for the NHS.

Then you need to speak to your HR department and request a certificate, bring it to us and we’ll redeem it against the cost of your bike and accessories. The salary sacrifice commences from your next pay packet.

To get a bike on the scheme, your employer needs to sign up to a provider. If they’re unsure about how to do this, send them to us and we’ll help.


PRICE PROMISE

If you can find it cheaper - let us know!

As well as offering a fantastic range of cycling equipment, Big Bear Bikes is equally committed to offering great value.

We want you to shop with confidence, hence our simple price promise. If you are interested in any item from Big Bear Bikes, and it is in stock at a comparable UK cycle retailer at a lower price, we will match that competitor’s price.

Price Match – Terms & Conditions


  • Items must be in stock and available to all customers with a comparative retailer.
  • Only identical items (size, colour, year model, etc.) can be matched.
  • UK comparisons only.
  • We are unable to match pricing from auction sites such as eBay.
  • Comparable service conditions including delivery and fitting will be factored into the competitor’s price.
  • Product from our current range will only be matched. Price matching will not be applied to transactions involving other promotional offers, discounts, financial products (0% finance, etc.) or bike to work.
  • Repair, servicing and events cannot be price matched. Verification of the competitor’s price may be required by the Manager and the Manager’s decision is final.
  • Big Bear Bikes reserve the right to amend, withdraw or extend the offer at any time.
  • Price matching cannot be applied retrospectively.

Frame Size S, 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, Shimano, 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, Shimano MicroSpline freehub, Boost148, 12 mm thru axle, 29"
Shifters SHIMANO, Shimano XTR M9100, 12-speed,
Kickstand UNKNOWN, Unknown
Front Brake SH, Shimano XTR M9120 4-piston hydraulic disc // Shimano XTR M9120 4-piston hydraulic disc Shimano RT86, 6-bolt, 203 mm Max brake rotor size, Disc brake with hydraulic actuation
Rear Brake SH, Shimano XTR M9120 4-piston hydraulic disc // Shimano XTR M9120 4-piston hydraulic disc Shimano RT86, 6-bolt, 203 mm Max brake rotor size, Disc brake with hydraulic actuation
Rear Derailleur ,
Crankset E_THIRTEEN, E*thirteen E*spec Race carbon, 165 mm length
Chain SHIMANO, Shimano Dura-Ace/XTR M9100, 12-speed
Handlebar BONTRAGER, Bontrager Line Pro, OCLV Carbon, 35 mm, 27.5 mm rise, 780 mm width
Stem BONTRAGER, Bontrager Line Pro, 35 mm, Blendr-compatible, 0-degree, 45 mm length
Bartape / Grips BONTRAGER
Seatpost BONTRAGER
Seatpost Clamp UNBRANDED
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
Sizes L, M, S, XL
Brand Trek
Model Year 2024
Barcodes 768682485569, 768682485644, 768682485668, 768682485705, 768682485781, 768682485866, 768682485989, 768682486047
SKUs / Part Numbers 5304841, 5304842, 5304843, 5304844, 5304845, 5304846, 5304847, 5304848

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

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