Functional Gear BBS01 BBS02 Nylon Replacement 1PC 36 V / 48 V ABS Metal
Nylon is a necessary evil is because if steel gears were used it would be very noisy. for Bafang mid-mounted motors 36 V / 48 V 250 W / 350 W / 500 W / 750 W / 1000 W. Made of high-quality materials.