4100 Firestone Coil-Rite Air Spring Kit

Firestone 4100 – Coil Rite Air Helper Spring Kit

• Designed for cars, minivans, light trucks, RVs and SUV’s with coil springs.
• Control the air pressure in the air helper springs for varying loads and road conditions.
• Spring performance can be altered as easily as inflating a tire.
• Made of durable, elastic polyurethane.
• Coil-Rite air helper springs are designed to fit inside existing coil springs to create a variable spring rate.
• Average install time is 1–2 hours.
• Most of our Coil-Rite kits are no-drill which utilize the factory holes and can be installed in half the time or less.

Coil-Rite air helper springs mount inside an existing open coil spring suspension. These air springs provide adjustable spring rates far superior to the standard coil spring. The durable polyurethane air springs will support 230-450kg per set. Coil-Rite air helper springs are made of durable polyurethane to withstand the rigours of coil-sprung suspensions. Each air spring is pressure tested before leaving the factory. Over 1/2 million cycle life test. The Kit includes air springs, air line, fasteners, inflation valves (manual inflation), supports (if required), push-to-connect air fittings and detailed instructions.