E-Thirteen Helix 12 Speed Race Cluster - XD Driver - Grey - 42-50T - 12 Speed Images Uploaded - Ready for Review with protection that hits above

with protection that hits above it's class

With all these features it's pretty easy to see while this Mule is still kicking all these years later

This design allows the bearings to be serviced too

The Cura 4 inherits its quality of materials from its smaller brother

E-Thirteen Helix 12 Speed Race Cluster - XD Driver - Grey - 42-50T - 12 Speed Images Uploaded - Ready for Review with protection that hits aboveUnlike 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