What Are Automotive Bushings?

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    Purpose

    • Bushings are cylinder-shaped sleeves, isolators that fit between a suspension's and steering system's through-bolts and the holes that contain them. Bushings exist primarily to keep minor vibrations and shock from going through the car's suspension and into the chassis. Most manufacturers use rubber or synthetic rubber bushings.

    Poly Bushings

    • Rubber bushings will wear out over time, turning soft and squishy and allowing the car's suspension and steering to squirm and move in ways that it shouldn't. Polyurethane replacement bushings are much harder than rubber, very nearly as much so as solid metal. The poly bushing will greatly enhance suspension and steering precision, but will do so at the cost of ride quality and possibly durability off-road.

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