Monday | 9.00am - 5.30pm |
Tuesday | 9.00am - 5.30pm |
Wednesday | 9.00am - 5.30pm |
Thursday | 9.00am - 5.30pm |
Friday | 9.00am - 5.30pm |
Saturday | 9.00am - 5.30pm |
Sunday | 10.00am - 4.00pm |
Bank Holidays | 10.00am - 4.00pm |
2025 Cube Reaction Slx Hardtail Mountain Bike in Grey
Click & Collect - Always fast, easy & free
Select Click & Collect at checkout and pick up your order at a convenient location
Monday | 9am - 5.30pm |
Tuesday | 9am - 5.30pm |
Wednesday | 9am - 5.30pm |
Thursday | 9am - 5.30pm |
Friday | 9am - 5.30pm |
Saturday | 9am - 5.30pm |
Sunday | 10am - 4.00pm |
Bank Holidays | 10am - 4.00pm |
What do you do to improve the ride of a great bike that already features great components? You fit better brakes. The Reaction SLX's Shimano XT hyudraulic disc brakes' powerful, progressive control don't just help keep you safe, they also help you ride faster and have more fun. Combined with the smooth control of the RockShox Judy Silver air fork and easy shifting of the Shimano XT 1x12 gears, you're pretty much all set. The Schwalbe Racing Ralph 2.25in tyres – fast-rolling, smooth and grippy – round out the complete trail explorer.
The Reaction's sleek looks are thanks to its Smooth Welded head tube and seat tube junctions. It incorporates a threaded bottom bracket and internal cable routing for long-lasting service and simple maintenance. There's even a flat disc mount that integrates seamlessly with our kickstand mount, and integrated mounting points for ACID mudguards and carrier. Trail-ready geometry includes a lower top tube and tapered head tube for more confident handling, cables run internally for reduced maintenance, and there's plenty of room to run wide, grippy and comfortable 2.25in tyres. And, as your skills increase, there's scope to fit a dropper post upgrade.
All UK Mainland Bike Deliveries Over £999 - Free Bike orders are sent via TNT/FedEx with estimated delivery within 1 working day after quoted dispatch time (For Scottish Highlands, Northern Ireland, Isle of Man and the Channel Islands deliveries please allow an additional 1-4 working days).Bike orders under £999 will incur a £20 delivery fee.
Free Delivery On Orders Over £50.00 - When you spend more than £50.00 at 99 Bikes deliveries to a UK mainland address will be free (excludes bikes & large items).Certain regions and territories of the UK will incur additional charges, details of which can be found on our delivery page.
Click & Collect Orders -Please be aware Click & Collect orders may take some time to fulfil. We advise not to travel to your chosen store until you have been notified that your order is ready for collection.
At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged.
Find Out More About Returns >

Frame - Aluminium Lite, AMF, Double Butted, Internal Cable Routing, Tapered Head Tube, Flat Mount Brake, SIC Mount, FM Kickstand Mount
Fork - RockShox Judy Silver TK Air, 100mm, PopLoc
Headset - CUBE FPH868, Semi-Integrated
Stem - CUBE Performance CPS-Race
Handlebar - CUBE Rise Trail Bar, 680mm
Grips - ACID Icon
Rear derailleur - Shimano XT RD-M8100-SGS, ShadowPlus, 12-Speed
Shifters - Shimano XT SL-M8100-IR, Direct Attach
Brake - Shimano XT BR-M8100, Hydr. Disc Brake, PM/FM (160/180)
Bottom Bracket - Prowheel BSA PW-MB68
Crankset - Shimano FC-MT611, 32T, Boost
Crankset chainring sizes - 32T
Cassette - Shimano Deore CS-M6100, 10-51T
Number of gears - 12
Chain - KMC X12
Rims - CUBE EX25, 32H, Disc, Tubeless Ready
Front hub - Shimano HB-QC300, QR, Centerlock
Rear hub - Shimano FH-QC500-MS, QR, Centerlock
Tires - Schwalbe Racing Ralph, Addix Performance, Kevlar, 2.25
Pedals - CUBE PP MTB
Saddle - ACID Venec Lite
Seatpost - CUBE Performance Post, 27.2mm
Dropper Seatpost - NO
Seatpost clamp - CUBE Varioclose, 31.8mm
Net weight (kg) - 13.3
Gross weight (kg) - 16.62