About this item Smooth, Powerful Performance-1000W peak motor with 90Nm torque, up to 15MPH for effortless acceleration. Up to 50 Miles per Charge-36V 15Ah removable battery, All-Terrain Comfort Ride-20"x4" fat tires, 7-speed Shimano, 5 riding modes, and a wide backrest seat. Quick Setup, Easy Support-90% pre-assembled with step-by-step guide & responsive U.S.-based customer service.