e*thirteen Helix R 12-Speed Cassette for SRAM XD Freehub Bodies - 9-50 Teeth - nickel grey - FW2URA-112

e*thirteen Helix - More Range, Less Weight

Helix components are engineered to bridge the compatibility gap between SRAM and Shimano components, ensuring versatility and flawless performance. Helix R cassettes have replaceable gear clusters. That means ongoing service and replacement costs will be less than half that of SRAM cassettes. As an added bonus, Helix R 12s clusters are backward compatible with and can be used to upgrade your existing TRS+ 9-50 cassette. Future-proof your bike with e*thirteen Helix.

The HELIX R 12 Speed Cassette is an upgrade to any SRAM Eagle or Shimano drivetrain, with more range than any other cassette on the market. The 9 tooth cog lets you step down one chainring size while keeping the same top end gearing and provides not only better ground clearance, but an overall lighter drivetrain.

Highlights of e*thirteen Helix R 12-Speed Cassette

• 556% range: 9-50 Teeth: 9-11-13-15-17-20-23-27-31-36-42-50
• Replaceable clusters: 9-36 tooth steel and 42/50 tooth aluminium
• Clusters are reverse compatible with TRS+ 9-50 cassettes
• Helix R12 cassette is 60g lighter than TRS+ 9-50 12-speed cassette
• Compatible with SRAM and Shimano 12speed drivetrains
• Improved shifting performance including Shimano 12 speed compatibility
• Improved interface between steel and aluminum clusters
• Aluminium cluster is also available in intergalactic finish with ‘PVD Film’ to double the durability compared to anodized Versions

Advantages using the HELIX R Cassette

556% is more range than any other cassette on the market. 9-50T

ALL e*thirteen cassettes utilize two-piece construction, allowing for individual parts to be replaced as they wear

ALL THE OPTIONS
11 and 12 speed and 5 different colors available

LOW WEIGHT
Lighter than both XTR & XX1

Service and Tech Support

Unlike SRAM Eagle, Helix R cassettes have replaceable gear clusters. That means ongoing service and replacement costs will be less than half that of SRAM cassettes. As an added bonus, Helix R 12s clusters are backward compatible with and can be used to upgrade your existing TRS+ 9-50 cassette.

Compatibility

Works flawlessly with Shimano and SRAM 12s drivetrains despite the challenges in designing for the different cog spacing and chain behavior. Additionally, if your wheel has a SRAM XD Driver and you want to upgrade to Shimano 12s, you not only save money on the cassette, you don't have to spend the extra on a new hub driver either.

The Helix Advantage

The HELIX R 12 Speed Cassette is an upgrade to any SRAM Eagle drivetrain, with more range than any other cassette on the market. And it is 60g lighter.

The 9 tooth cog lets you step down one chainring size while keeping the same top end gearing and provides not only better ground clearance, but an overall lighter drivetrain. The aluminum one-piece 42/50 tooth cluster is easily replaceable so riders can keep their steel cluster for multiple seasons and freshen up granny as needed without buying a whole new cassette. The new Intergalactic PVD finishing is twice as durable as anodized models.

Helix R is also available in a 325g 9-46t 11 speed configuration that's compatible with both Shimano and SRAM Drivetrains.

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