Firestone R4Tech Air Suspension System

PC-Firestone-R4Tech

Ken Freund
January 15, 2013

Pickup trucks designed to tow heavy trailers usually have heavy-duty suspensions — as in sometimes harsh riding — especially when the truck is unloaded. If you find that even your dog doesn’t want to ride with you, you know there’s a problem. Necessity is the mother of invention, and to solve... Read more »

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