E-Thirteen Helix 12 Speed Race Cluster - XD Driver - Intergalactic - 42-50T - 12 Speed PDP|Option Installs quickly and securely to

Installs quickly and securely to your seat post and stem to adapt a wide range of bikes for transport

MicronGrip palm

360-degree ventilation

Not compatible with SRAM XD 11-speed cassettes

strong and affordable chain guide that has options for both ISCG 05 and BB mounting

E-Thirteen Helix 12 Speed Race Cluster - XD Driver - Intergalactic - 42-50T - 12 Speed PDP|Option Installs quickly and securely toUnlike 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