Firestone Coil-Rite Air Helper Spring Kit Rear 98-17 Toyota 4Runner (W237604135) Exhaust- Mufflers & Tips>H Pipes offering improved visibility on dark

offering improved visibility on dark & dusty trails

Complete installation kit includes: wire

clear sight windows allow for hassle-free filter inspection

This all adds up to a sophisticated system that increases air flow

unique bends and smooth transitions give you maximum horsepower

Firestone Coil-Rite Air Helper Spring Kit Rear 98-17 Toyota 4Runner (W237604135) Exhaust- Mufflers & Tips>H Pipes offering improved visibility on darkIf you're looking for a smoother ride for your vehicle that has a coil spring suspension, Firestone Coil Rite air helper springs are what you need. Designed to fit inside existing coil springs to create a variable spring rate, Coil Rite will level your vehicle and assist with more effective braking and handling, even under heavy loading and adverse road conditions. Coil Rite enables you to control the air pressure in the air helper springs so you can