Install these microcellular urethane springs above your rear axle to stabilize and support your GMC Sierra's existing suspension. Unlike many one-spring-fits-all kits on the market, this one can be customized according to the weight of your cargo.
Features:
Note: Firestone Work-Rite springs will not increase your GMC Sierra's weight-carrying capacity. Do not exceed the manufacturer's weight limit for your GMC Sierra.
Work-Rite springs reduce the rear sagging that accompanies heavy loads or that results from towing hefty trailers. Hauling heavy cargo or pulling a trailer often causes the rear of your GMC Sierra to sag while the front end rises. This means that the rear axle is handling the full weight of the load and more of your truck's weight as well. The lighter weight on the front axle means that the front tires make less contact with the road, causing problems with traction, steering and braking. With the springs helping to more evenly distribute the weight, your tires make better contact with the road and your driving control improves greatly.
One size does not fit all when it comes to the load you carry. This spring kit lets you choose from different spacer combinations during installation to give you customized load support for the weight of the cargo that you typically haul. Using the optional spacers, you can adjust the distance between your springs and axle. Closing the gap between the springs and your axle offers more immediate support and better maneuverability because the Work-Rite springs respond sooner to the load's weight than springs without spacers.
Use more spacers to close the gap if you usually haul heavy loads, engaging the Work-Rite springs sooner and increasing the height and improving the handling of your GMC Sierra when it's loaded. Use fewer spacers if your loads are light or if you frequently travel unloaded. Leaving at least a 1/4-inch gap between the springs and your axle allows the existing leaf springs to operate normally when you're unloaded, ensuring a smooth, comfortable ride.
Each helper spring in the kit works independently to support the passenger's or driver's side of your truck so that when you swerve or turn sharply, the spring compensates to reduce body roll. Because your GMC Sierra handles better with the springs, less turbulence is passed along to the trailer, helping to keep the trailer in line.
Your driving comfort is further enhanced if the trailer does begin to sway (for example, from a gust of wind or a passing big rig) because the movement from the trailer is not transferred to your GMC Sierra. The helper springs also work to make the sway subside more quickly.
Work-Rite springs are made of a special polymer that helps them to retain their shape better than rubber and still work in below-freezing conditions. They are less elastic than rubber, meaning less play is introduced into the suspension than with rubber springs. The firmer Work-Rite springs also resist road chemicals and extreme temperatures better than rubber, so they last longer.
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