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e*thirteen components
Helix R 12 Cassette Cluster

5 out of 5 stars
1 Review

Out of Stock

Don't worry though, we have a lot more Mountain Cassettes in stock than that.

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Helix R 12 Cassette Cluster

After miles and miles of trail riding, rather than having replace your entire expensive cassette, e*thirteen's Helix R Cassette allows you to replace only the faster-wearing alloy cogs and keep using the heartier steel cogs for multiple seasons. Since the 42-50t cluster is separate, you can replace only those that you've been putting through the paces on the local climb. When it comes time to replace the steel cluster, the 9-36t option will take care of the smaller cogs. The Helix R Cassette is compatible with both SRAM and Shimano systems, with a wider gear range than either with that 9-tooth cog.


  • Replacement clusters to keep your drivetrain performing well
  • 9-36t or 42-50t allows you to replace only the worn part of your cassette
  • e*thirteen's Helix R cassette is compatible with 12speed SRAM and Shimano
  • Multiple color options to add that custom build look
  • Item #ETR1WV8
Cog Sizes
9 - 36t, 42 - 50t
Cog Material
[9-36t] steel, [42-50t] aluminum
Freehub Type
12-speed Sram or Shimano
Claimed Weight
[9-36t] 6.4oz (181g)
Manufacturer Warranty
5 years

Overall Rating

5 based on 1 ratings

Review Summary

5 Stars - 1 reviews
4 Stars - 0 reviews
3 Stars - 0 reviews
2 Stars - 0 reviews
1 Stars - 0 reviews

Fits Small

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