520 Aluminum Race kit features RK’s premium, lightweight XW-ring sealed racing chain with a gold finishKit includes a premium Driven® 7075 T6511 lightweight Aluminum black hard anodized rear sprocket...
Low Friction X-Ring ChainChromoly Steel Front SprocketHigh Carbon Steel Rear SprocketThe X-Rings twist between the side plates instead of being squished to reduce friction and minimize power lossHigh...
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