Additional reactive braking response, a novel parking mechanism, and the opportunity to lock the wheel with 1 hand only. Impressed by its effective predecessors, Surron Ultra Bee requires general performance to a whole new degree. Surron’s 4th technology electricity System is with the hear of our new vision for this https://mysocialport.com/story5578117/5-tips-about-surron-electric-bike-you-can-use-today