This is the standard nitrogen valve that you find on new Fox Performance Series and Factory Series shocks that have the black aluminum reservoir. On older Fox shocks that had a welded top instead of the billet aluminum top, those shocks usually used a 1/8" NPT Schrader valve. On older Fox shocks that have a billet aluminum top, Fox would use a 7/16"-20 valve.

This 5/16"-32 Schrader valve will also fit Sway-A-Way and RaceRunner shocks. saw race runner

This is the standard nitrogen valve that you find on new Fox Performance Series and Factory Series shocks that have the black aluminum reservoir. On older Fox shocks that had a welded top instead of the billet aluminum top, those shocks usually used a 1/8" NPT Schrader valve. On older Fox shocks that have a billet aluminum top, Fox would use a 7/16"-20 valve.

This 5/16"-32 Schrader valve will also fit Sway-A-Way and RaceRunner shocks. saw race runner