520 Aluminum Race kit features RKÆs premium, lightweight RX or XW-ring sealed racing chain with a gold finish Kit includes a premium Driven« 7075 T6511 lightweight Aluminum black hard anodized rear sprocket paired with Driven« C45 steel case hardened and quenched front sprockets Kit includes one-tooth-smaller-than-stock front sprocket RKÆs 520 Aluminum Race Kit combines the enhanced performance of race gearing and lightweight rear sprockets to reduce rotating mass Experience quicker starts and quickest to your bikeÆs red line in every gear without sacrificing normal ride and handling. CHAIN KIT HON CBR1000RR
