Firestone "Coil-Rite" air bag helper springs are designed to fit inside the existing coil spring suspension creating a variable rate spring. These air bags are made of durable, elastic polyurethane providing years of comfort and stability to your vehicle. "Coil-Rite" air bags enable adjustment for varying loads and road conditions by inflating or deflating the springs. Performance can be altered as easily as inflating a tire. Installed between the frame of the vehicle and the suspension providing load support through the use of air pressure.
1. Do NOT exceed the vehicles Recommended Gross Vehicle Weight Rating (GVWR)
|Download Instructions:||4105 Instructions|
|Level Load Capacity:||500 lbs to 1000 lbs|
|Average Install Time:||1 to 2 hours|
|Front or Rear Axle:||Rear|
|Drilling Required (Yes or No):||No|
|Part 4105 fits:||