e*thirteen Helix R 12-speed Cassette, SRAM XD™ and XDR™

  • Sale
  • $253.95
  • Regular price $338.95

Ships FAST from Canada 🇨🇦
EASY 30-day returns
Orders over $150 ship FREE

⚠ For use with SRAM SRAM XD™ or XDR™ freehub bodies 

Cassette NOT compatible with: standard HG (8,9,10 or 11 speed) or Shimano Micro Spline
Confused? Drop us a line before ordering!

More Range, Less Weight!

The e*thirteen Helix R 12-Speed 9-45T cassette extends legendary Helix shift performance and cross compatibility with SRAM™ and Shimano™ 12-speed drivetrains, to the light weight Gravel and XC marketplace. Weighing in at a svelte 319g, this light weight engineering marvel offers an industry leading 500% gear ratio, due to e*thriteen's exclusive 9T smallest cog. The 9T cog also also lets you step down one chainring size, while keeping the same top end gearing, meaning both better ground clearance and an overall lighter drivetrain. Helix Cassettes were engineered with improved reliability of steel and aluminum assembly, and the 38-45T alloy cluster is easily replaceable so riders can keep their steel cluster for multiple seasons and freshen up the granny as needed without buying a whole new cassette. Futureproof your bike, save weight, add gear range and spice things up with a touch of color with e*thirteen Helix-R cassettes.



  • Compatibility
    • Works flawlessly with Shimano™ and SRAM™ 11s drivetrains, despite the challenges in designing for the different cog spacing and chain behaviour.  Additionally, if your wheel has a SRAM™ XD™ Driver and you want to upgrade to Shimano™ 12s, you not only save money on the cassette and don’t have to spend the extra on a new hub driver.
  • Freehub Mount
    • XD™ and XDR™ Drivers Only
  • Materials
    • 1 aluminum cogs, 10 steel cogs. PVD finishing on Intergalactic model improves durability and wear life.
  • 500% Range
  • Size
    • 9-45T: 9-11-13-15-17-19-22-25-28-32-38-45
  • 12-speed
  • 319g
  • 5-year warranty
    • Guaranteed to be free from defects in materials or workmanship for 5 years after original purchase