Ideal O.E. replacement Q4 Sealed Chain (Q4 seal-ring chain) offers 1.5 to 2 times longer wear resistance than regular O-ring chainsEach refined component designed with computer analysis provides higher tensile strengthSpecially controlled heat treatment means tougher material, more durabilityQ4 seal ring and reinforced pin and roller provide superior wear resistance, higher impact resistance and fatigue strengthQ4 seal ring offers less friction, which leads to less power loss - almost half of that of standard O-ring chainRound rivet head offers superior rigidity over 2 or 4-point (quad-staked) rivetingIncludes rivet link