Cube Reaction SL green n grey
Mountainbike Hardtail

We don't give a bike the SL tag lightly, it has to be earned. In the case of the Reaction SL it's your guarantee of a bike that'll transform any ride into a motion-blurred celebration of speed. Light, agile and equipped to take on any trail, we've equipped it with a selection of light, reliable and adaptable components. Fox's 32 Rhythm fork serves up 100mm of easily adjustable air sprung, oil damped travel to take the sting out of the t(r)ail. Shimano's peerless XT 2x11 transmission has the range to get you up any climb, and matching hydraulic disc brakes with a 180mm front rotor ensure you have the power at your fingertips to keep your speed under control on the way back down. It's ready to rock. The question is, are you?

Frame and Features

As with all our frames, our engineers took their time and made sure to tick all the boxes with the Reaction SL. Mechanically formed, double butted 6061 aluminium tubes for low weight and superb acceleration and control? Check. Fully integrated, sealed bearing headset for long life, installed in a tapered head tube for accurate steering? Present and correct. Internal cable routing for all cables including a future upgrade to a Stealth dropper post? Of course. Put it all together with our Agile Ride Geometry for ride-by-wire nimbleness and it's a winning formula whether you're racing, going to work or just riding for fun. What more could you want?

For whom is the Cube Reaction SL suitable?

For the fast trails, the sharp turns, the long tours, the Alpine crossings - in short: For all those who rely 100% on their bike. Despite the weight and stiffness optimizations, these mountain bikes are still sufficiently comfortable and make long tours possible. These complete packages offer little room for improvement and are reliable companions on all rides for years. Almost too bad for the after-work hours - but who knows, maybe you'll find another trail?

The advantages of 27.5 inch tires

27.5 inch wheels are the logical addition to the large 29 inch wheels and the optimum compromise for all smaller riders and trail fanatics. The combination of smoothness and manoeuvrability meets every wish of a biker. More agile than the 29 inch wheels and therefore the optimal choice for off-road driving and hairpin bends that leave you with little reaction time. This category offers the best choice especially for those changing from 26 inch wheels. 27.5 inch combines the best of two worlds and creates bikes that are not restricted in their use. Whether Fully or Hardtail - 27.5 inch is the golden mean and the perfect tyre size for all who want to use their mountain bike according to its purpose.

The advantages of 29 inch tires

29 inch is THE trend of the last few years, which was able to assert itself completely. Initially viewed critically by mountain bike purists and equipped with some teething troubles, the bike industry has recognized the trend and made it the new standard through continuous improvements. The advantage of the 29" tyres is the enormous running smoothness, which brings great advantages and saves power on long tours as well as uphill and downhill. Obstacles are easier to overcome due to the larger circumference of the wheels, and a greater distance is covered by turning the bottom bracket. By improvements and adjustments in the frame construction and the component selection, initial problems with the agility in the Trail and the optics of smaller frames were optimally balanced. Whether fully or hardtail, a 29 will take you far away.

Please note