RideRite heavy duty air helper spring kits provide up to 5000 lbs.
per pair;Bag/Spring Type:Double Convoluted;Installation Type:Bolt On, No Drilling Required;Inflation Method:Manual Inflation;Optional Compressor and Gauges sold separately;Height Sensor Optional or Included?: Optional;Lift kit compatible?: Yes, May Require Spacers;California Residents: WARNING Firestone Ride-Rite Rear Air Helper Spring Kit - 2220 System Type: Axle Mount;Load Capacity: 4,800 lbs.Keep The Vehicle Level, Level Off-Center Loads, Reduce Suspension Fatigue, Air Adjustments Improves The Ride, Reduce Bottoming Out, Increase Vehicle Stability.