Incl. 21 & 40 tooth sprockets & 104 link chain. Comes with a super enhanced quality AFAM 530 XSR2-G XS ring chain. Afam''s Xs ring system is designed to minimize friction with maximum sealing capabilities for best lubrication and longevity of the chain. The new steel alloys allowed a lighter built but strong chain for excellent weight-strength ratio and shock resistance. Comes with gold colored plates. AFAM uses the best alloy steel available to produce their front sprockets. Minimum tolerances combined with the race-proven AFAM tooth profile guarantee the quality you demand. AFAM steel rear sprockets are manufactured in C45N steel and the teeth are induction hardened. Perfectly round; flat and concentric. The unique AFAM tooth profile makes it the best aftermarket sprocket available. This sprocket combination coupled with the quality chain guarantees high mileage.