Anti-Wallow Control (A.W.C.)
Anti-Wallow Control is an isolation check valve in the rebound adjuster circuit that opens bleed flow during rebound motion and closes bleed flow during compression. It allows you to optimize your low-speed compression setting, dramatically increasing rear wheel traction without unwanted body motion (wallow) in turns, during accelerations or in G-outs, while maintaining the perfect rebound.
With AWC, adjustments made to rebound do not affect compression — when you firm up rebound on a stock shock, you are also firming up compression. This gives you the maximum amount of traction and control for all sections of the track, and you no longer have to sacrifice performance in the whoops for protection against bottom-out events.

