MODEL RD11KC9 (by special order only)

Reyco Granning’s R-Series suspension is the fast, easy way to upfit your Chassis Cab Chevy/ GMC truck with an option the factory doesn’t offer: the matchless comfort, handling, and safety of air ride. The wear pads react lateral loads from the tires into the frame. We designed it this way to improve packaging, allowing us to eliminate the traditional transverse rod mounted between the axle and frame.

This arrangement allows OEM’s to package frame cross members, fuel tanks or exhaust between the frame rails. This eliminates the need to weld an expensive transverse rod bracket on top of the axle. In a deep kneeling scenario required for ambulance applications and others this transverse rod bracket can intrude into the body when the air is exhausted. Field-proven for 20+ years, the R-Series conversion kits are complete air systems custom designed for Chevy and GMC chassis. The fit is precise and the bolt-on kit installs in half the time –– no welding or costly modifications needed.



  • Delivers smooth air ride comfort, loaded or empty or towing
  • Enhances the ride, safety and value of the truck
  • Fast, easy, low-cost installation
  • Bolts directly to OEM chassis — no frame-welding
  • Custom designed for Chevrolet and GMC trucks
  • Does not affect truck’s load-carrying capacity
  • Self-leveling system maintains optimal ride height regardless of load
  • Twin height control valves maintain ride height side to side
  • Z-beam “big rig” design boosts roll stiffness and reduces body lean
  • Custom-tuned monotube shocks enhance ride and stability and shock life
  • Design minimizes stress on OEM frame-members
  • Utilizes key OEM components to reduce installation costs
  • Minimum interference with OEM exhaust system
  • Conversion does not affect OEM warranty when properly installed
  • Cab control of rear air dumps to kneel/raise vehicle for easy trailer hook-up and rear-door loading
  • Ambulance air control kit offers faster air-dump/air-up
  • Meets all Chevrolet/GMC ship-through specs when properly installed
  • Field-test proven for 20+ years
  • Reyco Granning Air Suspensions offer the most reliable, affordable, fully engineered systems for a wide range of work trucks, ambulances, shuttle buses, tow rigs, RVs and more.