ethirteen Helix Race 12s 13-52 Cassettes

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Cassettes

ethirteen Helix Race 12s 13-52 Cassettes

Name: ethirteen Helix Race 12s 13-52 Cassettes
Brand: ethirteen
SKU: 1101
Availability: OutOfStock

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Optimize cadence and shifts under load in steep terrain, with a Helix R 13-52T close ratio gearing cassette upgrade for your e-bike or MTB.

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.

Benefits & Tech Specs

Close ratio gearing cassette for optimized cadence and improved shifting under load.
Lower fatigue and extended range (Bio or Battery) with sweet spot cadence for maximum efficiency.
Helix R 13-15-17-19-22-25-28-32-36-40-45-52 vs Eagle 10-12-14-16-18-21-24-28-32-38-44-52.
Cross-compatibility with Shimano, SRAM, and TRP drivetrains and chains.
Aluminum and Steel clusters can be replaced separately to reduce service costs.
Patented two-piece aluminum/steel construction for strength, stiffness, lightweight, and durability
XD/XDR Driver required.

Driver Compatibility: XD Driver
Size: 13-52T
Speeds: 12 spd
Configuration: 10 Steel / 2 Alloy Cogs
Drivetrain Compatibility: Shimano/Sram/TRP 12sp
Cog sizes: 13,15,17,19,22,25,28,32,36,40,45,52
Range: 400%
Material: 7075 AL / Steel
Weight: 467g
Colors: Black, Grey, Bronze, Naranja, Eggplant, Intergalactic