A real mountain bike with an extra portion of power makes for a unique riding experience. Our CUBE Reaction Hybrid HPA Pro successfully combines a performance hardtail with day-to-day functionality, thanks to the latest Bosch drive technology and a hand-picked selection of high quality components.
Our aluminium Superlite frame perfectly matches the requirements of the new Bosch system. Both the mounting system for the drive and battery unit and our Agile Ride Geometry have been developed in-house down to the last detail. Combined with the Optimal Drive Position, it all means we’ve been able to give the Reaction Hybrid HPA Pro an agile ride feel and the most efficient possible drivetrain. We’ve even included room to mount mudguards, making this bike perfect for everything from weekend rides to the daily commute. Oh, and the bicycle trailer bracket mount means you could be dropping your kids off at the nursery on the way to the office (or hauling luggage). Six frame sizes mean it’s easy to find exactly the right one for your height: 16 and 18in come with 27.5in wheels and 17, 19, 21 and 23in are 29ers.
Centrepiece of this bike is the new Bosch CD drive. With up to 75Nm it’ll really get you going and is currently the most powerful E-drive available. The large capacity 400Wh battery has plenty of reserves of power, but you can specify your Reaction HPA Hybrid Pro with the optional 500Wh battery for even greater range. Shimano’s 9 speed Deore transmission delivers precise and easy gear shifting, while the hydraulic BR-M355 disc brakes will bring you to a halt reliably, even in wet weather. A comfy ride position is guaranteed by the CUBE saddle and CUBE Performance Cockpit components, while Suntour’s coil sprung XRC32 fork smoothes things out on even the bumpiest of roads or trails.
Agile Ride Geometry
We ran innumerable tests to develop the Agile Ride Geometry in our series of big wheel bikes. We also added the 27.5in wheel size to the very well received portfolio. Three important details lead to the very agile character. Increased fork offsets let us achieve the same trail as our 26in bikes without having to steepen the head angle, thus maintaining generous toe clearance to the front wheel. Secondly we shortened the chain stays without compromising the seat angle. We invented a patented construction to mount the front derailleur to give us more tyre clearance while keeping a conventional seat angle, leading to a perfect riding position for every rider size. Last but not least we kept the BB height the same as on our 26in bikes. These measures lead to a natural riding position. Every mountain biker will feel immediately at home on a CUBE 29er or 27.5.
Frame Safe System
To protect our high-end aluminium frames from damage, they are built with the CUBE Frame Save System replaceable derailleur hanger. The mounting thread is in the hanger and not in the frame as usual. In case of a crash, this hanger can be easily and quickly replaced by a new one.
Wet Paint Surface
On polished, brushed aluminium and all HPC frames, the logos and graphics are applied in multi-layer wet paint. We use this surface treatment technology mainly to save weight.
Optimal Drive Position
The ?engine? is the critical part of an Ebike because of its weight and its junction to the regular drivetrain. These factors present a real challenge for the frame design. This is why CUBE developed an innovative new frame construction for the new Ebike generation: simultaneously being the cradle for the electric motor, the pivot for the rear link and the seat of the shock eyelet, the very complex area of the bottom bracket is made of two forged halves. The groove in the front section together with the specially formed down tube is home for the power pack which in this way has a very low position in the frame triangle. The positive outcome is an extremely low center of gravity supporting an agile riding characteristic while achieving a super rigid bottom bracket area.
Easy Mount Kickstand
The Easy Mount Kick Stand is a new system developed and designed by CUBE. The base of the stand is mounted from below to a fitting plate integrated to the frame and fixed with a through bolt. This kick stand is extremely stiff and solid through the enlarged contact areas between base and frame which gives a stable stand even with loaded panniers.