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Product #: 18638G Brand: Firestone
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  • Increases ride comfort when loaded or towing
  • Eliminates bottoming out under load
  • Maximizes safety and stability when loaded
  • Made of long-lasting microcellular urethane, (not an air spring)
  • Low temperature flexibility down to -81 degrees Fahrenheit
  • Prevents leaf springs from sagging if your vehicle is constantly loaded
  • Compatible with 5th wheel and gooseneck trailer towing
  • Does not void your vehicle’s factory warranty
  • Most applications are no drill kits, bolts directly into your vehicle’s existing holes from the factory
  • Firestone earned TS 16949 ISO Quality Certification + environmental management certified ISO 14001

When you install Firestone Work-Rite Assist Springs it will completely revolutionize the way your vehicle performs when it is fully loaded or towing. The characteristics of the progressive load-deflection Work-Rite equipped vehicle will be particularly noticeable under heavy loads and towing conditions. These Firestone “suspension assistants” easily install between your vehicle’s frame and axle and are maintenance-free. Over 75 years ago Firestone designed and then patented the very first air spring. Fast forward to now and Firestone remains the number one selling air spring manufacturer in the world. With a strong history of innovation and quality, you can rest assured when purchasing a product made from this famous company.

NOTE: Work-Rite Springs do not increase the load carrying capacity of your vehicle, they only improve the ride and handling characteristics when loaded or towing. Never exceed your vehicle’s Gross Vehicle Weight Rating (GVWR).

See product for application and installation details.

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