SRAM PG-990 9-Speed Cassette
Smooth, light and extra quiet. These slightly nicer than XT level cassettes have a blast finish and an extra light and quiet running non-metallic carrier for the largest cogs. Powerglide II Technology provides precise shifting and excellent wear A new aluminum five arm spider is CNC machined for precision shifting and increases strength Anodized spider and silver lockring give this cassette a unique look that sets it apart