R4 Tech Leveling SystemA Patented, Hybrid Air-Over-Leaf Suspension, R4 Tech is the ideal suspension for people who drive their tow vehicles everyday. It will greatly improve the vehicle's unloaded ride quality due to the lower-rated leaf springs and the air spring operating at low pressure curb weight. Other excellent candidates for the R4 Tech include people who tow horse trailers, high-dollar 5th wheel campers and trailers that contain precious or fragile cargo. Kit Contents: 2 Leaf Springs, Trailing Links, Differential Bracket, Frame (Eye) Bracket, Air Spring Kit, Air Control Kit and Load Adaptive Shocks.

• Improve the Ride: Rides like air suspension, installs like leaf suspension plus Ride-Rite™. Air springs and foundation suspension are re-engineered to improve ride across all conditions, especially unloaded. The shocks included in the kit automatically adjust to the load to further optimize ride quality.
• Handle the Load: Big-rig suspension components, big-rig durability. The vehicle will maintain the same height under all loads.
• Reduce Driver Fatigue: Air spring suspension reduces cab noise and road vibrations. The harsh and choppy ride of the factory leaf suspension is largely eliminated.
• Improve Handling: The tuned dampers and air springs, as well as the constant vehicle height, greatly improve the handling characteristics. Drivers will also get less wheel hop during braking and less shudder during acceleration.
• Reduce Weight: The suspension shaves over 150 pounds off of some 1-ton trucks. This helps at the gas pump.
• Install with Ease: Installs in the same space, using the same holes as the OEM leaf suspension.