Sunstar Aluminum Rear Sprocket 428 - Fits KTM - RearWorks Triplestar Aluminum rear sprocket featuring hard anodized coating for extra strength & durability. Classic Sunstar 'works' finish, made from 7075 T6 aerospace grade aluminum for light weight with mud grooves at the base of the tooth area on the front side only. Together with our exclusivE "tooth valley design", this allows for up to 50% more chain roller contact area, leading to longer life out of your drive components. Used by championship
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