All 520 Steel Quick Acceleration Kits feature RK's premium RX or XW-ring sealed racing chain in either gold or natural finish. Kit includes premium Driven steel alloy black case hardened rear sprocket paired with a Driven steel case hardened front sprocket. RK's 520 Steel Quick Acceleration Race Kits combine the enhanced performance of race gearing and durability of steel components.
- All 520 Steel Quick Acceleration kits feature RK's premium, lightweight RX or XW-ring sealed racing chain in either gold or natural finish
 - Kits include a premium Driven C45 steel alloy black case hardened rear sprocket paired with Driven C45 steel case hardened and quenched front sprocket
 - RK's 520 Steel Quick Acceleration Race Kits combine the enhanced performance of race gearing and durability of steel components
 - Kits include a one-tooth-smaller-than-OE front sprocket
 - Experience quicker starts and quickest to your bike's red line in every gear without sacrificing normal ride, handling or longevity
 - OEM Gearing Details: 16 Tooth Front Sprocket and 43 Tooth Rear Sprocket
 - Gold Kit Inculdes: 15 Tooth Front Driven Sprocket - 43 Tooth Driven Rear Sprocket with an RK GB520GXW GoldChain
 - Natural Kit Inculdes: 15 Tooth Front Driven Sprocket - 43 Tooth Driven Rear Sprocket with an RK 520GXW NaturalChain
 
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