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Firestone #4177 "Coil-Rite" air bag helper springs are designed to fit inside the existing Ford Flex 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. Wind Star "Coil-Rite" air helper springs enable adjustment for varying loads and road conditions by inflating or deflating the air bag helper springs. Spring performance can be altered as easily as inflating a tire. Firestone # 4177 "Coil Rite" air bag helper springs are installed between the frame of the Flex and the suspension providing load support through the use of air pressure.
Features
- Firestone # 4177 Air Bags are custom fit for the Ford Flex
- Easy installation (1 to 2 hours)
- Firestone #4177 Kit includes (2) air bag helper springs and any required hardware
- Will handle loads capacities up to 500-1000 lbs*
- Reduce suspension fatigue
- Improve steering and balance
- Increase vehicle stability
- Prevent "bottom" out
- Firestone Limited Lifetime Warranty
| Download Instructions | 4177 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 |
1. Do NOT exceed the vehicles Recommended Gross Vehicle Weight Rating (GVWR)
Fits the Following Model:
Ford Flex
Fits the Following Years:
09, 10, 11, 12
2009, 2010, 2011, 2012
