Hands down, this is Sram's strongest chain. Sram's PC-991 Cross Step chain features increased rivet strength and the PowerLock connecting link -- the only secure tool-less attachment device for a sub 6mm chain in today's market. We all want strength, lighter weight and smooth, positive and precise shifting, and Sram can deliver.
Chrome-hardened rivets are virtually unbreakable
Lightweight nickel plates
Cross-step rivet application for smooth response and shifting up front and in the rear