Overview
The Firestone Ride-Rite Coil-Rite 4157 is a set of rear air helper springs for coil-sprung vehicles. The springs mount inside an existing open coil spring suspension and provide adjustable spring rates compared with the standard coil spring.
The air springs are made of durable polyurethane and support 500-1,000 lbs per set. Drilling is required for installation. Compare your vehicle’s year, make, model and trim with the fitment before buying.
Key features
- Adjustable air spring rates for rear coil suspensions
- Durable polyurethane air springs
- Listed support range of 500-1,000 lbs per set
- Mounts inside an existing open coil spring suspension
- Kit includes air line and inflation valves
Drilled mounts and coil springs
Drilled mounts put the air springs in direct contact with the vehicle structure, so the mounting points need to be strong and well placed. Before drilling, check the frame or crossmember for brackets, brake lines, fuel lines and wiring. Clear the area fully so the drill bit does not reach anything it should not.
Once the springs are mounted, route the air line away from heat and sharp edges and check the valves for leaks. Polyurethane springs handle repeated flexing well, but they still need inspection for rubbing against the coil and any metal edges. Retighten the mounts after the first drives, as drilled holes can settle under load.
- Locate brake and fuel lines before drilling
- Deburr holes to avoid cutting the air line
- Recheck mounts after the first few drives
Specifications
| Brand | Firestone Ride-Rite |
|---|---|
| Product number | 4157 |
| UPC | 767555111291 |
| Application | Rear coils |
| Material | Polyurethane air springs |
| Load support | 500-1,000 lbs per set |
| Installation | Drilling required |
| Included | Air springs, air line, inflation valves |
Vehicle fitment
It is for rear coil-spring suspensions only, so fit is limited to those setups. Make sure the year, model and trim match your vehicle before ordering.
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Mark and drill the mounting locations carefully before fitting the springs, and confirm hole positions against your suspension. Support the vehicle securely on stands while drilling near suspension components.
What’s included
The kit includes air springs, an air line and inflation valves. A compressor and gauges are not included with the kit.
