This kit includes 1 replacement air spring for Firestone Coil-Rite kit 4100. Spring fits inside an existing front coil spring to help level your vehicle, improve braking and handling, and reduce tire wear.
Replaces one of the two M10 X 1.5 X 50 MM flat head cap screws for your Firestone Ride-Rite air helper spring kit. Attaches your upper bracket to the factory jounce bumper's threaded bolt hole in your vehicle's frame. Includes 1 screw.
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