REAR SPROCKET 520 52T RDSpecial 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 More details
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