Recommend If you need to purchase other parameters of motors or batteries please click here Specification BrandBAFANG PositionMid motorRated voltage48VRated power500WChain wheel 1 44T 2 46T 3 48T 4 52TRpm n0 126Rpm nT 118Max torque100 N mEfficiency≥80 Pedal sensorSpeedShaft standardJISColorBlackWeight4 3kgNoise grade dB 55Operating temperature 20 45℃Electronic brake handleYesSpeed sensor functionYesLight drive capacity6 3 max CertificationsCE EN 14764 ROHSWaterproofIPX5Salt spray test standard h 96Features Universal Compatible Bafang BBS 01B Mid drive motor kit is compatible with fat bike mountain bike road bike and so on This kit is designed to all bikes with 65 73mm bottom bracket InstallationModel Easily installation by the installation video and the instruction manual we provided Three riding Model E bikePedal Assisted bicycle Pedaling bicycle Pure Power bicycle for you to choose you can choose the E bike to enjoy a long time travel and also exercise Easy InstallationTwo Riding Model Easily convert your pedal bike into a motorized bike within 1 hour We will offer a installation video and instruction manual Two riding Model E bikePedal Assisted bicycle for you to choose you can choose the E bike to enjoy a long time travel and also exercise Package included 1 x Mid Motor1 x Chain Wheel 44T 46T 48T 52T Optional 1 x Pair of Brake Lever1 x Pair of Crank Arm1 x Thumb Throttle1 x Speed Sensor1 xInstall Parts and Screws1 x Connecting Wire1 x Pair