Details The HELIX R Cassette is an upgrade to any SRAM Eagle or Shimano drivetrain, with more range than other cassettes on the market. The 9 tooth cog lets you step down one chainring size while keeping the same top end gearing and provides not only better ground clearance, but an overall lighter drivetrain. 1 aluminum cogs, 10 steel cogs Designed for use with XD and XDR drivers only Cassette Body Type: SRAM XD 11/12 Speed Cassette Cogs: 9-11-13-15-17-20-24-28-33-39-46 Color: Nickel Defined Color: Silver Drivetrain Speeds: 11 Range: 9-46