Get the widest range available, save weight, and futureproof your ride with e*thirteen cross-compatibility and serviceability. A drop-in upgrade in range for e*thirteen 9-50T Cassettes
Helix Race 12s 9-52T Cassettes deliver an industry-leading 578% gear range and precision shifting performance 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. Replacement alloy cluster for Helix R 9-52T cassettes or range upgrade for any e*thirteen 9-50T Cassette with an industry-leading 578%, and the full range of vibrant Helix colors.
Benefits & Tech Specs
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The widest range in the galaxy at 578%.
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Cross-compatibility with Shimano, SRAM, and TRP 12s drivetrains and chains.
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2-piece forged/machined design provides easy and affordable assembly/service and reduces waste.
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43-52t aluminum cluster backward compatible with 9-50T Helix Plus or Race cassettes.
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Unique 9T high gear allows the use of smaller chainrings for clearance and weight savings.
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Tested extensively for MTB and e-bike use
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XD/XDR Driver required.
43-52T:
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43-52T Alloy Cog Cluster.
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Compatible with Helix R 9-52T cassettes and any e*thirteen 9-50T cassettes.
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Upgrades range on 9-50T cassettes from 556% to 578%.
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7075 AL strength and stiffness
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Driver Compatibility: XD Driver
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Size: 9-52T
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Speeds: 12 spd
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Configuration: 10 Steel / 2 Alloy Cogs
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Drivetrain Compatibility: Shimano/Sram/TRP 12sp
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Cog sizes: 9,11,13,15,17,20,23,27,31,36,43,52
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Range: 578%
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Material: 7075 AL / Steel
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Weight: 198g, 392g
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Colors: Black, Grey, Bronze, Naranja, Eggplant, Intergalactic
| Shipping | ethirteen backorder – receive in 10 business days |
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