Feature:1. What Will You Get: This 25H chain sprocket kit includes one 146 link drive chain, one 12T front wheel sprocket and one 55T rear wheel sprocket to meet your needs.2. Durable Steel Material: This chain sprocket kit is made of premium steel material, with high toughness and great wear proof performance, long service life.3. Perfect Fit: This 25H chain sprocket kit fits closely to the original hole position, accurate shape and size design, less jamming during use, perfect accessories.4. Exquisite Forging Process: Fine workmanship, no corrosion, no deformation, beautiful appearance, small size, to provide you with excellent use experience.5. Scope of Application: This 25H chain sprocket kit is suitable for DIY 47CC 49CC mini motorcycles, ATV, four pit pocket bikes and other mechanical power modification.Specification:Item Type: Chain Sprocket KitMaterial: SteelWeight: Approx. 320g/11.3oz.Package List:1 x Front Wheel Sprocket1 x Rear Wheel Sprocket1 x Chain