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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.

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Model ID


  • The PC-991 features an inner and outer plate design that offers faster and more accurate shifting in all conditions
  • Exclusive PowerLink™, the strongest way to close a chain
  • ISO 4210 compliant. See Declaration of Conformity for details.
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Compat - Speed (CN) 9s
Chain length (links) 100 links, 102 links, 104 links, 106 links, 108 links, 110 links, 112 links, 114 links, 116 links, n/a
Color - Outer link Silver
Color - Inner link Silver