Upgrading your FOX Podium shock to our QS3 (Quick Switch 3) tool - free compression adjuster allows for simple and repeatable suspension setting changes mid - ride. Its wide range of compression adjustment provides noticeable changes to ride quality and handling without the complications of counting detents. Choose a QS3 setting that gives you the most confidence, comfort, or handling characteristics with just a flip of a switch. This valve is best for riders who like to make adjustments during a ride but are not concerned with the loss of fine tuning.