ethirteen Helix Race 12s 13-52 Cassettes

Helix R 12s 13-52T Cassettes are a new close-ratio gearing design, engineered specifically to optimize cadence and shift performance under load in steep terrain with frequent climbs and gravity-powered descents. While the close-ratio concept was conceived as a game changer for e-bikes and built exceptionally strong, it’s equally at home on mountain bikes and weighs in at an impressive 467g. Offering unparalleled cross-compatibility with all Shimano, Sram, and TRP 12 drivetrains, it features e*thirteen’s patented 2pc construction for ease of assembly and service.