0
Your Profile
Your Basket 0
Your Offers 0
Continue Shopping
Checkout

Click & Collect

Realtime Stock

Cycle to work

Save money & spread the cost

Bike Pod Hire

Transport your bike safely & securely

Klarna

Buy now, pay later

Book My Bike In

Request a service today

Click & Collect

Realtime Stock
To improve your shopping experience today and in the future, this site uses cookies.
Read our full Privacy Policy & Cookie information here
I Accept Cookies
The Reaction SLX's geometry, handling and Shimano XT components are all designed to let you get on with the important part –having fun.
The Reaction SLX's geometry, handling and Shimano XT components are all designed to let you get on with the important part –having fun.
Cube

2025 Cube Reaction SLX - Hardtail Mountain Bike - Slate Black / Black

£1,199.00
Size Guide
Earn
in Customer Rewards when you buy this item today
Sign Up
Sign In
2025 Cube Reaction SLX - Hardtail Mountain Bike - Haze Blue / Reflect
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
Earn Rewards
When you purchase this item, you will earn of rewards points to spend on your next purchase from us. You can spend your Rewards balance in-store & online.

2025 Cube Reaction SLX - Hardtail Mountain Bike - Slate Black / Black

Season:2025

Brand:Cube

Code:843200

For those times when you just want to concentrate on the ride, nothing beats a really great bike fitted with kit you can rely on. The Reaction SLX's geometry, handling and Shimano XT components are all designed to let you get on with the important part –having fun.

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.

Technical Information
  • Frame
  • Sizes
    X-Small (340mm), Small (370mm), Medium (420mm), Large (470mm), X-Large (515mm), XX-Large (560mm)
  • Colours
    Haze Blue / Reflect, Slate Black / Black
  • Frame
    Aluminium Lite, AMF, Double Butted, Internal Cable Routing, Tapered Head Tube, Flat Mount Brake, SIC Mount, FM Kickstand Mount
  • Forks and Shocks
  • Fork
    RockShox Judy Silver TK AIR, 100mm, PopLoc
  • Rear Shock
    N/A
  • eSystem
  • Motor
    N/A
  • Controller
    N/A
  • Display
    N/A
  • Battery Type
    N/A
  • Battery Integration
    N/A
  • Conectivity
    N/A
  • Charger
    N/A
  • Drivetrain and Brakes
  • Brake System
    Shimano XT BR-M8100, Hydr. Disc Brake, PM/FM (160/180)
  • Rear Derailleur
    Shimano XT RD-M8100-SGS, ShadowPlus, 12-Speed
  • Front Derailleur
    N/A
  • Shifters
    Shimano XT SL-M8100-IR, Direct Attach
  • Bottom Bracket
    Prowheel BSA PW-MB68
  • Crankset
    Shimano FC-MT611, 32T, Boost
  • Cassette
    Shimano Deore CS-M6100, 10-51T
  • Chain
    KMC X12
  • Cockpit
  • Handlebar
    CUBE Rise Trail Bar
  • Stem
    CUBE Performance CPS-Race
  • Grips
    ACID Icon
  • Headset
    CUBE FPH868, Semi-Integrated
  • Wheels
  • Front Hub
    Shimano HB-QC300, QR, Centerlock
  • Rear Hub
    Shimano FH-QC500-MS, QR, Centerlock
  • Rim
    CUBE EX25, 32H, Disc, Tubeless Ready
  • Front Tyre
    Schwalbe Racing Ralph, Addix Performance, Kevlar, 2.25
  • Rear Tyre
    Schwalbe Racing Ralph, Addix Performance, Kevlar, 2.25
  • Max Tyre Clearance
    57mm
  • Finishing Kit
  • Seatpost
    CUBE Performance Post, 27.2mm
  • Saddle
    ACID Venec Lite
  • Pedals
    CUBE PP MTB
  • Extras
  • Kickstand
    N/A
  • Lighting
    N/A
  • Lock
    N/A
  • Carrier
    N/A
  • Mudguards
    N/A
  • Other
    N/A
  • Please Note:
    Every effort has been made to ensure accuracy throughout this website. However, manufacturers reserves the right to change bike specifications, features, prices and colours without prior notice. If you would like to check the specification of a bike before purchasing, please call one of our stores.
Sizing Information

Frame Geometry


XSSMLXLXXL
ASeat Tube Length (mm)340370420470515560
BSeat Tube Angle74°73.5°73.5°73.5°73.5°73.5°
CTop Tube Length (mm)555575595615635655
DHead Tube Length (mm)108111111122142157
EHead Tube Angle68.5°68.5°68.5°68.5°68.5°68.5°
FFork Rake (mm)
GTrail (mm)
HWheel Base (mm)106810821125114611681190
IChain Stay Length (mm)427427450450450450
JBottom Bracket Drop (mm)525265656565
KStack (mm)595598627637656670
LReach (mm)384398409426441457
MStand Over Height (mm)707720759792824858
NHandlebar Width (mm)680680720720720720
OStem Length (mm)505060607070
PCrank Length (mm)165170170175175175
QWheel Size27.5"27.5"29"29"29"29"
Professional Opinion
  • Aluminium Lite
    There's aluminium, and then there's CUBE Aluminium Lite. This heat-treated 6061 aluminium is stiff, fatigue-resistant and, because of its natural corrosion resistance, a great material from which to make lightweight tube sets – and bicycle frames. And it does all this without adding unnecessary weight, so you can get the best enjoyment out of your CUBE.
  • SplitSize
    The right bike should fit you perfectly. That's why we created SizeSplit. For shorter riders, the smaller 27.5in wheel standard allows us to build frames that fit well while remaining agile and sure-footed. And, for taller riders, we built a range of sizes around the fast-rolling 29er wheel standard. Whichever one you choose, you can be sure of a fit that makes your bike feel as though it was built just for you.
  • Kickstand Mount
    A kickstand can be useful, no two ways about it. But if it's going to do its job properly, it needs a secure mount. That's why we put as much effort into designing the Kickstand Mount for our frames as we do for any other feature. Neat, unobtrusive but exceptionally strong and stable, it's the best way to help keep your CUBE bike upright when you're not riding it.
  • Internal Cable Routing
    Cables connect your handlebar controls to vital components like gears and brakes, but there's no need for them to get in your way. With Internal Cable Routing we've reduced clutter and maintenance by running cables through the frame, keeping them out of the way of dust and water contamination – or damage from abrasion – as well as cleaning up your bike's appearance.
  • SIC Mount
    Flexibility is important for a bike that's going to slot into your life. That's why, for our Semi Integrated Carrier Mount, we designed a system that's unobtrusive when you don't need it and really simple to use when you do. By adding our Semi-Integrated Carrier your CUBE can take on the shopping, your commute, or take you further afield at the weekend...
  • Smooth Welding
    Smooth Welding isn't easy, but worthwhile things usually aren't. It has two advantages. First, and most obviously, it looks great: one tube seems to almost flow into the other. Second, and at least as importantly, it helps to minimise load peaks on welded areas for better frame strength and durability.
Product Reviews
Write a review
0 As rated by 0 customers

Write a review for 2025 Cube Reaction SLX - Hardtail Mountain Bike - Slate Black / Black

Your name
Your email address
How would you rate it?
Would you recommend this product?
Let others know your opinion
Submit Review Close
Question(s) answered about 2025 Cube Reaction SLX - Hardtail Mountain Bike - Slate Black / Black
Ask a question
Question(s) asked regarding 2025 Cube Reaction SLX - Hardtail Mountain Bike - Slate Black / Black

Ask a question

Your name
Your email address
Your phone number
Your question
Submit Question  Close
Home Mountain Biking Bikes Cube Mountain Bikes