E-Thirteen Helix 12 Speed Race Cassette - XD Driver - Grey - 9-50T - 12 Speed Heavy/Bulky The most aggressive model dedicated

The most aggressive model dedicated to e-bikes: made for those who seek fun and performance without compromises

Compatibility: DT Swiss hubs only

Chain retention:Adjustable slider with co-molded soft rubber for sound reduction

hub Synthesis Standard

E-Thirteen Helix 12 Speed Race Cassette - XD Driver - Grey - 9-50T - 12 Speed Heavy/Bulky The most aggressive model dedicatedThe HELIX R Cassette is an upgrade to any SRAM Eagle or Shimano drivetrain, with more range than any other cassette on the market. The 9 tooth cog lets you step down one chainring size while keeping the same top end gearing and provides not only better ground clearance but an overall lighter drivetrain. The improved tooth profile of the Helix cassette's features Shimano 12 speed level shifting performance with the improved reliability of a steel and