• Each refined component, designed with computer analysis, provides higher tensile strength
• Specially controlled heat treatment means tougher material and more durability
• Q4 seal ring and reinforced pin and roller provides superior wear resistance and higher impact resistance and fatigue strength
• Q4 seal ring offers less friction, which leads to less power loss, almost half that of standard O-ring chain
• BikeMaster 520 BMXR chains comes with clip link; 525 and 530 BMXR chains comes with rivet link
• Made in Japan






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