E-Thirteen Helix 12 Speed Race Cluster - XD Driver - Grey - 42-50T - 12 Speed YGroup_7033435750445 Front and rear specific wheels

Front and rear specific wheels tuned and optimized to address the specific performance requirements and loads of mountain bike riding

Compatible with standard QR dropouts and thru-axles up to 12mm

The visor is goggle friendly and offers 15 degrees of adjustment so you can park your goggles up there during the climbs and easily get it back in the right spot for the descents

Easy to reach air valve

These also feature an innovative stretch insert in adductor (palm and thumb) for improved hand movement and lever control

E-Thirteen Helix 12 Speed Race Cluster - XD Driver - Grey - 42-50T - 12 Speed YGroup_7033435750445 Front and rear specific wheelsUnlike 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