Fox Shox Float DPS Factory Series 3 Position Rear Shock - 190 x 51mmFox Shox Float DPS Factory Series 3 Position Rear Shock 190 x 51mm The Fox Float air spring system is light and reduces the force to initiate travel, providing excellent sensitivity and small bump compliance for all riders and pressure settings. It features positive and negative air springs that automatically equalize during use to give each rider the right pressure balance. DPS Float rear shocks with Fox Dual Piston System (DPS) have double pistons