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When Cube sat down to design the Reaction Pro, they wanted the perfect blend of function, reliability and performance. So they started with the precision of Shimano's XT 1x12 transmission, because it offers an enormous range and an unparalleled reputation for precision.

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CUBE has added Shimano XT hydraulic disc brakes for their superb all-weather stopping performance to help keep you safe, whether you're out in the hills or battling across town. And we finished with the RockShox Judy Silver air fork, because it combines easy adjustability and a remote lockout with trail-smoothing alacrity. It's the complete package.

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Frame size S (16") comes with 27.5" wheels, sizes M (18"), L (20"), XL (22") and XXL (24") are 29ers.

Key Features

• Rockshox Judy Silver suspension fork: For comfort and control.
• Disc Brakes: For reliable stopping in all conditions.
• Shimano Deore 12 speed: To get you up the steepest of hills.

Full specification:

• 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
• Gear Shifters: Shimano Deore SL-M6100-IR, Direct Attach, Rapidfire-Plus
• Chainset: Shimano FC-MT611, 32T, Boost
• Chainrings: 32T
• Rear Cassette: Shimano Deore CS-M6100, 10-51T
• Chain: Shimano CN-M6100
• Front Derailleur: N/A
• Rear Derailleur: Shimano XT RD-M8100-SGS, ShadowPlus, 12-Speed
• Bottom Bracket: Shimano SM-BB52 | 73mm BSA
• Pedals: ACID PP MTB
• Rims: CUBE ZX20, 32H, Disc
• Front Hub: Shimano HB-M4050, QR, Centerlock
• Rear Hub: Shimano FH-MT401, QR, Centerlock
• Front Tyre: Schwalbe Racing Ray, Addix Performance, Kevlar, 2.25
• Rear Tyre: Schwalbe Racing Ralph, Addix Performance, Kevlar, 2.25
• Brakes: Shimano XT BR-M8100, Hydr. Disc Brake, PM/FM (180/160)
• Handlebars: CUBE Flat Race Bar, 720mm
• Grips: ACID React Pro
• Headset: CUBE FPH868, Semi-Integrated
• Stem: CUBE Performance Stem SLX, 31.8mm
• Saddle: Natural Fit Venec
• Seatpost: CUBE Performance Post, 27.2mm
• Weight: 13.1Kg
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Details

Completely revised, the brand-new Reaction 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 the kickstand mount, and integrated mounting points for ACID mudguards and carrier. Updated 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.

Technologies

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 CUBE has 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 CUBE's Semi Integrated Carrier Mount, they designed a system that's unobtrusive when you don't need it and really simple to use when you do. By adding the 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.

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 CUBE has put as much effort into designing the Kickstand Mount for their frames as they 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.

SizeSplit
The right bike should fit you perfectly. That's why CUBE has created SizeSplit: To be able to offer frames with the optimal fit and at the same time agile and reliable handling, CUBE uses 27.5 inch wheels for shorter riders. And, for taller riders, CUBE has 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.