• Finest crafted components assisted with special seal ring with factory grease and “round rivet head” provide superior rigidity
• High tensile steels used throughout the chain components-larger pins means loads are spread out over wider areas, resulting in longer life and more strength
• Specifically controlled heat treatment means tougher material and more durability
• BikeMaster 520 BMZR chains come a with clip link; 525 and 530 BMZR chain come with a rivet link
• Made in Japan



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