Helix Race 12-Speed 9-45T Cassette Color:Grey e*thirteen's ergonomic 9 degree backsweep/5

e*thirteen's ergonomic 9 degree backsweep/5 degree upsweep geometry offers a natural and supportive feel

The tool-free travel adjustment allows you to fine-tune the amount of drop without removing the post from the frame

Turbocharger-compatible Upper Sliders are available separately for e*thirteen e*spec Chainguides

Things break sometimes

Helix Race 12-Speed 9-45T Cassette Color:Grey e*thirteen's ergonomic 9 degree backsweep/5DROP IN GRAVEL UPGRADE: Helix Race Gravel 12 speed, 500% Range, 330g The Helix Race 12 Speed 9 45T cassette extends legendary Helix shift performance and is compatible with SRAM, Shimano, and TRP Shifters and Derailleurs of the same gearing count and similar cage capacity, to the lightweight Gravel and XC marketplace. PRODUCT FEATURES Compatible with SRAM, Shimano, and TRP Shifters and Derailleurs of the same gearing count and similar cage capacity