Helix Race 12s 9-52T Cassettes deliver an industry-leading 578% gear range and precision shifting performance, compatible with Shimano, SRAM, and TRP 12s drivetrains. Love to grind climbs? Throw on a 28T chainring and go pull some stumps. Hungry for top speed? Push a big ring, comfortable in the knowledge that you’ve got the most gear range you can get from a single-ring, 12-speed setup. Helix Race 9-52T cassettes are light enough for weight-conscious trail bikes at just 392g, yet tough enough to take the abuse of high-powered e-bikes.