e*thirteen Helix Race Cassette - 12-Speed, 9-52t

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.

• Get the widest range available, save weight, and futureproof your ride with e*thirteen cross-compatibility and serviceability.
• Widest range in the galaxy at 578%
• Cross compatibility with Shimano, SRAM, and TRP 12s drivetrains and chains
• 2-piece forged/machined design provides easy and affordable assembly/service and reduced waste
• 43-52t aluminum cluster backward compatible with 9-50T Helix Plus or Race cassettes
• Unique 9T high gear allows use of smaller chainrings for clearance and weight savings
• Tested extensively for MTB and e-bike use
• Specs: XD Driver, 9-52T, 12 spd, 10 Steel / 2 Alloy Cogs (9,11,13,15,17,20,23,27,31,36,43,52), Shimano/Sram/Trp 12sp, 578% Range, 7075 AL / Steel
• Weight: 404g