The cube reaction hybrid hpa sl electric bike 2017 is impossible to beat out for pure value and performance blending cubes39 accumulated experience in a beautifully crafted frame designed to get the best out of the bosch drive unit this is a bike that will keep you smiling mile after mile built from the ground up for 2017 cube focussed their attention on integrating the bosch motor and battery even more seamlessly into the frame the result is cleaner looks even better handling and