Description Features 1Well Fitted: The sprocket adapter can be compatible for bafang electric bike central drive motors BBS01 and BBS02. Excellent workmanship makes the adapter fit the motor well. 2Durable: The motor bike gear adapter is made of aluminum alloy, and the hardness is much higher than that of the original steel sprocket, which is firm and durable. 3High Accuracy: The bike mid motor adapter adopts aluminum alloy CNC cutting to ensure the accuracy of the product, so as to improve the performance. 4Easy to Install: The motor bike gear adapter is small in size, simple in structure, easy to install and disassemble, and can directly replace the original or damaged adapter. 5Lightweight: The chainring spider adapter is light in weight, and will not increase the weight of the bike after installation, so as to avoid affecting the speed of the bike. Item Type: Motor bike gear adapter Material: Aluminium alloy Weight: Approx. 205g/7.2oz BCD: 104MM Applicability: 7, 8, 9, 10, 11 speed Package List 1 x Motor Bike Gear Adapter