Features1 Compatibility: Specifically designed for Bafang MXUS 250W hub motor, this internal gear is a great accessory for mountain bike modifications, offering a fit. 2Steel Nylon Materials: Constructed with nylon material and steel bearing, this electric bike motor gear is rust resistant and deformation resistant, ensuring a longer lifespan. 3Compact and Lightweight: With 36 teeth, this gear has a small size, lightweight design, and high reliability, making it convenient to carry and providing performance. 4Superior Craftsmanship: This electric bike hub motor gear is professionally manufactured to provide the performance and dependability you expect, abrasion resistance. 5Easy Installation: The internal gear is easy to install and replace, simply remove old parts and put this new one in its place, convenient for daily maintenance.SpecificationItem Type: Electric Bike Hub Motor GearMaterial: Steel, NylonWeight: Approx. 53g/1.9ozPackage List1 x Electric Bike Hub Motor Gear