Bushings allow suspension components to pivot without transmitting noise or vibration to the cabin, or requiring lubrication. Most OE bushings are made of rubber, which absorbs the vibration, and flexes to allow movement. However, this flexibility allows excessive play in the suspension system, adversely affecting handling when the vehicle is driven aggressively. Polyurethane is more rigid and the material of choice for performance suspension bushings.

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Bushings are used where the body mounts to the frame or subframes, and where components like steering racks and differentials are mounted to the frame or body, to isolate the cabin from shock, vibration and noise. Besides their cushioning properties, bushings can also twist and return to their original shape many times before they wear out, making them ideal for suspension parts that pivot like control arms, leaf springs, shock absorbers and sway bars.

Rubber bushings are fine when a soft, quiet ride and factory spec handling is desired. Rubber is softer and more compliant than polyurethane, allowing it to absorb more shock and vibration. It supplies more cushioning than polyurethane and tends to operate more quietly, for a smooth, silent ride. Rubber bushings are perfect for repair or rebuild jobs on a stock vehicle that won’t be driven aggressively. They’re perfectly acceptable when factory like ride and handling, and original equipment level performance is preferred.

However, the same qualities that make rubber bushings great for stock applications make them inadequate for high performance use. Rubber’s compliance allows too much flexibility in critical suspension joints when a vehicle is driven hard. When the steering wheel is turned or a control arm or shock absorber moves, part of the motion is used up compressing the rubber bushings. Instead of one part moving directly in response to another, there is a momentary hesitation while the rubber compresses before the part moves. The result is steering and handling that is mushy and imprecise.

In contrast, the polyurethane performance suspension bushings we offer are much more rigid than rubber. With polyurethane, while the vehicle ride can be firmer, handling will be much sharper and steering more precise. Connections between suspension parts will be more direct, and the suspension will be more perfectly aligned. When you turn the steering wheel, the car will turn directly in response to your input. Polyurethane bushings will also last much longer than rubber because they’re impervious to environmental conditions like heat and contaminants like oil that usually cause rubber to deteriorate.

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Suspension Bushings Reviews

Average rating:  4.5  4.7 - 91 reviews
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Bushings were satisfactory, easy to install, timely delivery. Will definitely buy from this supplier in the future.
JPosted by Joe (Las Vegas, NV) /
1986 Toyota Camry
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