Feature: 1. Steel Material: Made from premium steel, this 25H chain sprocket set is strong, durable, wear proof, rust resistant, not easy to damage and has high toughness. 2. What Will You Get: This chain sprocket kit includes one 25H 146 link drive chain, one 25H 15T 10mm H hole front sprocket and one 25H 80T 29mm rear sprocket to meet your needs. 3. Wide Compatibility: This 25H chain sprocket set is suitable for DIY 47CC 49CC mini motorcycles, ATVs, dirt bikes, pocket bikes and other modification. 4. Enhance Performance: The precise 15T front and 80T rear sprocket are designed to improve the overall performance of your bike, providing a smoother and more efficient ride. 5. Perfect Fit: This 25H chain wheel sprocket kit fits closely to the original hole position, accurate shape and size design, less jamming during use, perfect accessories. Specification: Item Type: 25H Chain Sprocket Kit Material: Steel Weight: Approx. 587g/20.7oz Front Sprocket Inner Diameter: Approx. 10mm/0.39in Rear Sprocket Inner Diameter: Approx. 29mm/1.14in. Package List: 2 x Sprocket 1 x Chain