• 520 Aluminum Race kit features RK’s 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
• RK’s 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 bike’s red line in every gear without sacrificing normal ride and handling

Kit comes with:

A 520 front STEEL sprocket 15T
A 520 Aluminum BLACK rear sprocket 43T 

A 520 RK GXW GOLD COLOR CHAIN

Best kit money can buy with light weight Driven racing sprockets and ultra light front sprockets and a racing RK chain.