BikeMaster 525 Bmor O-Ring Chain Features: BikeMaster 525 Bmor O-Ring Chain offers not only the industry's best value/price, but also the highest durability for your dirt bike, ATV or street bike Features: Component designs optimized with computer analysis to provide higher tensile strength - average of 9,300 lbs. Specially controlled heat treatment means tougher material Reinforced roller offers higher impact resistance and longer durability Round rivet heads offers superior rigidity over 2 or 4-point (quad-staked) riveting Includes rivet master link Made in Japan Note : Recommended Chain Length is a based on OEM gearing and chain size. May require additional links or cutting if stock gearing has been altered.