Moto Master Fusion Series Dual Ring Rear Sprocket Kawasaki / Suzuki 80cc-112cc The Moto Master Fusion Dual Ring Rear Sprocket marries the toughness of steel with the lightness of aluminum for an optimal blend of durability and weight efficiency. Its steel outer ring and aluminum core design ensure it stands up to rigorous use while offering a lighter alternative to full-steel sprockets. Features: Special hardened and nickel coated steel outer ring Will outlast an aluminum sprocket up to 3 times 50 less weight compared to a normal steel sprocket Aircraft-grade 7075-T6 aluminum carrier Precise manufactured outer ring and carrier interlock permanently using a specialized heat-shrink procedure Carrier is color anodized coated for extra durability CAD designed, CNC machined and laser cut using state of the art technology Note: Images are for reference only.