Features1COMPATIBILITY: The gear is designed for Bafang mid motor for BBS01 BBS02, which can ly replace the damaged parts and restore the performance of the motor. 2 METAL MATERIALS: Made of metal materials with high strength and abrasion resistance, it is able to perform ly under continuous operation. 3HIGH ACCURACY MACHINING: Each gear is processed by high accuracy CNC machine tools to ensure tooth shape and backlash, which reduces running noise and improves transmission efficiency at the same time. 4SPECIAL SURFACE PROCESSING: The mid motor big gear is treated with special surface processing technology, which makes it not easy to corrode and more abrasion resistant. 5LONG SERVICE LIFE: It has a long service life, can withstand frequent use for a long time, not easy to be damaged, and effectively reduce the frequency of replacement.SpecificationItem Type: Mid Motor Big Gear Material: MetalApplicable Model: For Bafang BBS01 BBS02 Mid MotorPackage List1 xMidMotorBigGear