Specifications Rated Power W 350W500W750WNo load speed Rpm 113 118113 118145 150Load Speed Rpm 105 110105 110130 135Maximum torque N m 100100120Motor net weight kg 3 98 4 244 24Net weight kg 5 37 5 635 63Gross Weight kg 6 12 6 386 38Number of motor poles 2P 161616Installation LocationMid drive motorWheel Diameter inches OptionalStructureGear DrivesRated Voltage DCV 48Efficiency ≥80Booster SensorsSpeed TypeAxis StandardJISColorBlackNoise dB 55Operating Temperature 20 45 CElectronic Brake GripYesVariable Speed Sensor FunctionYesNumber of magnets pulses cycle 1Reduction Ratio1 21 9Waterproof GradeIP 65CertificationsCE EN 14764 ROHSAnti corrosion class96Features 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 Ch