E13 APS Adjuster, Fits All Gen4 Carbon Cranks

*Gen3 Carbon Crank APS adjusters use an aluminum outer ring and plastic inner ring. Typically when damage occurs, it is just to the plastic inner ring. If you need a new APS for your Gen3 Carbon Crank, simply order a Gen4 Carbon Crank APS, remove the inner ring and install it on your current aluminum outer ring.