54T Ratchet Upgrade Kit

Upgrade your Synthesis Ratchet-equipped hub with a 54-tooth ratchet ring and spring kit, allowing for a faster 6.6° engagement. 

Note: Compatible only with Crankbrothers Synthesis wheels already equipped with a ratchet system. Not compatible with base-model pawl-drive hubs, or i9 1/1 & Hydra hubs.