Firestone Ride-Rite 2186 Single Automatic Air Command SystemSuspension Air Compressor Kit Single Automatic Air Command System Single Automatic Air Command System; Inflates Both Air Helper Springs Equally; SPECIFICATIONS: WARNING CA Proposition 65: No FEATURES: Uses Height Control Valve Mounts Between The Chassis And Suspension Inflates Two Bags Individually Firestone manufactures and provides air springs for all vehicles. We began developing air suspension for passenger cars and trucks more than 70 years ago.