Helix Race 12-Speed 9-52T Cassette



e*thirteen expanded drivetrain possibilities for every rider with our original 9-50T Helix Race Cassette with 533% gear range. Our proprietary 9t sprocket and patented two-piece construction gave riders an unprecedented ability to build the drivetrain of their choice.

Now, we’ve built on that winning formula and added a 52T sprocket for an eye-watering 578% total range.

Love to grind climbs? Throw on a 28T chainring and go pull some stumps. Hungry for top speed? Push a big ring, comfortable in the knowledge that you’ve got the most gear range you can get from a single-ring, 12-speed setup.


  • Widest range in the galaxy at 578%
  • Cross compatibility with Shimano, SRAM, and TRP drivetrains and chains
  • 2-piece forged/machined design provides ease of assembly/service and reduces waste
  • Aluminum and Steel clusters can be replaced separately to reduce service cost
  • 43-52t aluminum cluster backward compatible with 9-50T Helix Plus or Race cassettes
  • Unique 9T high gear allows use of smaller chainrings for clearance and weight savings
  • 5 bright anodized or PVD color options 
  • Tested extensively for analog and e-bike use

*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.
9-52T: 9, 11, 13, 15, 17, 20, 23, 27, 31, 36, 43, 52
12 Speed

Tech Info

User manual
Frequently Asked Questions

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