Retention System: Giro's quick

8mm Hex Wrench Insert - 63g

Allows full use of travel in both directions - fully extends to top out without any quibbles (including on Debonair B1 air springs) and fully compresses without excessive ramp

Material: Made from a super tacky rubber compound

CHAIN HOOK - Stainless steel wire

E-Thirteen Helix 12 Speed Race Cluster - XD Driver - Nickel - 9-36T - 12 Speed Exclusive Retention System: Giro's quickUnlike 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. When installing the Helix R cassette, as with any cassette, it's recommended to check for chain wear. If your chain shows 0. 5% or more wear, you will