This is the strongest 520 kit on the market! 

Complete with a lightweight chromoly steel drilled Superlite front sprocket, New Superlite black steel rear sprocket, new heavy duty premium D.I.D. 520ZVMX gold plated X'ring sealed street (rated to 1200cc's) chain cut to length and a rivet style master link. 
 

New Superlite rear sprockets are ounces heavier than alloy rear sprockets but yet last three times the life. Superlite rears are also the same weight as Supersprox Stealth Tri-Metal sprockets but half the price.