E13 Helix Race Cassette | 12 Speed | 9-50T | Nickel Grey


The HELIX R 12 Speed Cassette is an upgrade to any SRAM™ Eagle or Shimano™ drivetrain, with more range than any other cassette 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.