Sram Red 10 Speed Og-1090 Road Cassette

- OG 1090 design merges stiffness, durability, and simplicity in a revolutionary package
- OpenGlide technology allows for the smoother transition between gears when up- and downshifting
- PowerDome technology: 8 largest cogs are machined from one piece of CroMoly steel, then given a nickel finish
- Stiffer, more durable and provides better power transfer than any other lightweight cassette
- Fits on Shimano-compatible 9- and 10-speed hubs, except Dura Ace and Shimano compatable 10-speed wheels that have tall cog splines on the freehub body