Helix Race 12-Speed 9-50T Cassette Gravel 83mm crank requires the Helix

83mm crank requires the Helix GR Chainring

You get effective puncture resistance at lower weight

Fits generation 1 guides only

Non-drive side TRS/LG1 carbon shell rear hubs

Helix Race 12-Speed 9-50T Cassette Gravel 83mm crank requires the HelixHelix Race 12 speed, 556% Range, 384g More Range, Less Weight The Helix Race 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. PRODUCT FEATURES Compatible with SRAM, Shimano, and TRP Shifters and Derailleurs of