e*thirteen Helix R 11-Speed Cassette

Helix Race 11-speed, 511% Range, 370-Grams

More Range, Less Weight
The HELIX Race Cassette is an upgrade to any SRAM™ or Shimano™ 11speed shifter and derailluer combination, with more range than other cassettes 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.

PRODUCT FEATURES
- Compatible with SRAM®, Shimano®, and TRP® Shifters and Derailleurs of the same gearing count and similar cage capacity. (Mounts on an XD driver only)
- The 2-piece design allows for replaceable aluminum cogs

RIDER BENEFITS
- Reduces un-sprung rear wheel weight for improved suspension function and handling
- Excellent shifting with Shimano™ and SRAM™ systems without compromise
e*thirteen’s wider range and 9-tooth cog allow riders to run a 2-tooth smaller chainring for more clearance and reduced weights
- Extend the life of 11-speed components by adding gear range to an existing bike