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Ultralight Rear Sprocket DESCRIPTION Manufacturer: Renthal MPN: 189U-420-55GRRD Title: Ultralight Rear Sprocket Size: 55T Option: Color: Red Rear Ultralight Sprockets: Manufactured to extremely tight tolerances from a special material developed to withstand the stress of Supercross, Motocross and Enduro. 7075 T6 aluminum alloy rear chainwheels are 66% lighter than steel, yet incredibly durable. Advanced tooth profile, concentricity and accuracy of fit provide maximum power transfer and long-life...

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