This Bafang BBS02 kit contains all the hardware for mounting plus the main wiring harness and a speed sensor kit. (includes Bafang install wrench) Also included are a basic bottom bracket removal socket and crank arm puller. All other items can be selected below to build the exact kit you require including throttle, E-brakes, chainring, display, and optional items. •We offer UART & CANBUS VERSION, PLEASE pick the version you want on the dropdown choses *Canbus motor-Battery connection is Yellow XT-60 connector. (45amp Red/Black Andersons can be installed for additional $20.00- and 1-3-day delay on shipping, please add note to your order) *UART motor- Expect 1-3 additional days for shipping due to controller program changes that have to be made. Battery connection is 45amp Red/Black Andersons. We offer the BBS02 in 6 configurations for standard 68/73mm bottom brackets. The most powerful motors feature a 48v motor running 750w, and the least powerful motor runs 36v with 500w.