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Helix Race 12-Speed 9-45T Gravel Cassette

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The Helix Race 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*thirteen's exclusive 9T highest gear cog.
  • A drop-in replacement for SRAM™ XPLR™ 10-44T Cassettes - A 13% increase in range!
  • Our 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 Race cassettes.
  • Compatible with XPLR and Eagle Derailleurs

*Hope XD drivers are undersized at the clamp location and require a Cassette Shim Kit 

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Product Spec

Freehub Mount
XD™ and XDR™ Drivers Only
2 aluminum cogs, 10 steel cogs. PVD finishing on Intergalactic model improves durability and wear life.
12 Speed
310 Grams

Tech Info

User manual
Frequently Asked Questions

Guaranteed to be free from defects in materials or workmanship for 5 years after original purchase