The Reaction Hybrid Pro 800 combines the versatility of a CUBE mountain bike with the powerful assistance of Bosch. Whether you’re heading off-road or sticking to the pavement, the 800 Wh battery and the smooth, quiet Bosch CX motor make cycling effortless. Need more range? The frame has space for a 250 Wh range extender. With the Shimano XT 12-speed transmission, you’ll always have the perfect gear, no matter the terrain. Heading downhill? Shimano hydraulic disc brakes and 2.6 inch Schwalbe tires ensure safe stopping power. An air-sprung suspension fork with 120 millimeters travel (100 millimeters for smaller frame sizes and Easy Entry models) and a hydraulic dropper seat post offer additional comfort and control on rough trails. This bike has it all – now it’s your turn to hit the road.
A significant performance boost for compatible CUBE bikes fitted with selected BDU38 Performance Line motors will be available from 4 May 2026. The upgrade is available simply by using the Bosch eBike Flow App. No other action is needed.
After downloading Performance Update 2.0 via the eBike Flow app, you can now choose to increase these peak values up to 120Nm torque , 600% support and 750 watts, with peak power also available for longer periods depending on riding conditions.
Maximum rider support of up to 600% is limited to speeds between 0 and 15km/h (this doesn't affect the speed limit of 25km/h for pedal assistance, which remains the same). Some trekking and city bikes equipped with hub gears may have lower performance increases to remain within manufacturer recommendations.
More boost. More precise control. Performance, redefined.
Read more