Install these microcellular urethane springs above your front 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:
Firestone Work-Rite springs will not increase your GMC Sierra's weight-carrying capacity. Do not exceed the manufacturer's weight limit.
Work-Rite springs reduce the front sagging that can accompany snowplow or grille guard use. Both often cause the front of your GMC Sierra to sag while the rear end rises. This means that the front axle is handling more of the load and more of your truck's weight as well. The lighter weight on the rear axle means that the rear 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. Your headlights stay pointed straight ahead, rather than downward, so that you can drive safely, and your tires suffer less wear.
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 included spacers, you can adjust the distance between your springs and axle. Closing the gap between your springs and 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 carry heavy front loads, engaging the Work-Rite springs sooner. Doing this increases the height and improves 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 (yet still work well in below-freezing conditions). They are less elastic than rubber, meaning that 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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