Firestone Coil-Rite Replacement Air Helper Spring 5.50in Dia. x 5in Length (Type - D) (W237606005)

Firestone is known for its durable rubber products, and their Coil-Rite air helper springs are a prime example. If your vehicle has coil springs and you're looking to improve its ride, especially when carrying loads, these springs are a solid option. They fit inside your existing coil springs to create a variable spring rate, which helps level out your vehicle. This leveling action can lead to more effective braking and better handling, even when you're dealing with heavy cargo or rough roads.

The real advantage here is adjustability. You can control the air pressure inside the Coil-Rite springs, much like inflating a tire, to match your load and the road conditions. They're constructed from durable, elastic polyurethane, built to last for years and provide a more comfortable and stable ride. These springs are designed to handle a wide range of temperatures, from -40°F to 180°F, and can support between 500 to 1000 lbs per set, as long as you don't exceed your vehicle's Gross Vehicle Weight Rating.