Features1Durable Material: The sprockets, chain, flywheel and connector are made of high strength steel. The bike repair parts are wear proof, durable and will not easy to break. 2Strong Structure: The bike repair parts provide maximum power transmission and long life. Forging process is adopted, and the chainring is not corroded and deformed. 3Accurate Processing: Accurate machining is adopted to ensure the ultimate retention, prolong the working life, and reduce friction and noise. 4Lightweight While Strength: The bike sprockets, chain and flywheel are light in weight and will not burden the bicycle. Even with lightweight design, they maintain high strength. 5Wide Compatibility: Our bike conversion set is compatible with most mountain bikes, road bikes, scooters, ATV, motorcycle, four wheeled off road vehicles on the market.SpecificationItem Type: Chain and Sprocket KitMaterial: SteelWeight: Approx. 934g/32.95ozPackage List1 x 54T Sprocket1 x Chain1 x Connector1 x Flywheel1 x 25T Sprocket