E-Thirteen Helix 12 Speed Race Cluster - XD Driver - Grey - 42-50T - 12 Speed Ignore Wholesale Tier 2 Brand Rule The harness uses soft breathable

The harness uses soft breathable spacermesh on the contact surfaces and die-cut foam ventilation

Timeless design for all day comfort

Who's this item for: These tubes are the perfect choice for anyone wanting a lightweight spare to carry around or use to replace the heavy butyl tubes in their tyres

Joe's recommends adding and/or replacing with fresh sealant every 3-12 months

Compatible with all chains

E-Thirteen Helix 12 Speed Race Cluster - XD Driver - Grey - 42-50T - 12 Speed Ignore Wholesale Tier 2 Brand Rule The harness uses soft breathableUnlike SRAM Eagle, Helix R cassettes have replaceable gear clusters. That means ongoing service and replacement costs will be less than half that of SRAM cassettes. As an added bonus, Helix R 12s clusters are backward compatible with and can be used to upgrade your existing TRS+ 9 50 cassette. When installing the Helix R cassette, as with any cassette, it's recommended to check for chain wear. If your chain shows 0. 5% or more wear, you will