BikeMaster 525x120 BMZR Z-Ring Chain - Gold/GoldSpecifically developed for today's 1,000cc to 1,400cc, high performance sport machines. High quality components coupled with a factory greased seal ring ensures superior rigidity. High tensile steel used throughout the chain components; larger pins mean loads spread out over wider area, resulting in longer life and more strength. Specially controlled heat treatment means tougher material and more durability. Note: This chain must be correctly matched