Both the Helix R 11 and 12-Speed Cassettes work flawlessly with Shimano™ and SRAM™ 12s drivetrains, despite the challenges in designing for the different cog spacing and chain behavior.

The improved performance of our new Helix cassette features great Shimano™ 12s shifting performance and improved reliability of steel and aluminum assembly. The new Intergalactic PVD finishing is twice as durable as anodized models. And it is 60G lighter.

The aluminum one-piece 42/50 tooth cluster is easily replaceable so riders can keep their steel cluster for multiple seasons and freshen up the granny as needed without buying a whole new cassette.