The PC 991 Cross Step version1 features a secondary riveting process that increases the push pin strength by over 25% compared to our standard riveting. It's a combination of strength, lighter weight and our legacy of smooth, positive and precise shifting that delivers true high performance. This is our strongest chain.
Extremely strong. Incredibly precise. SRAM's PowerChain II increases front and load shifting performance without sacrificing rear shifting precision. The Step2™ riveting process increases the Push Pin Power for increased strength and durability.