What is a rear strut tower bracket?

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Though technically not part of the suspension itself, both front and rear strut tower brackets (braces) are vital to the handling of many modern cars. These devices perform a number of important functions.

Purpose

Many modern performance cars use both a uni-body (frame-less) construction method and MacPhereson strut suspensions that concentrate the load of both springs and shock absorbers into one small area. Struts braces strengthen this area, which tends to flex under load.

Design

Strut braces are simply bars that run the width of the vehicle and have plates on either end that allow them to be bolted to the top of the strut towers.

Rigidity

Uni-body cars are very light because they lack a frame, but they tend to flex under load. By tying together the strut towers, strut braces can transfer this load and prevent flexing.

Benefits

Rear strut tower braces can make for more precise and predictable handling, and they can also reduce the squeaks and rattles associated with older cars.

Drawbacks

The only real drawback to a rear strut tower brace is that it does occupy a fair amount of space in the trunk, but this is often out-weighed by its benefits.

Source:

Locost7.info: Strut Brace Install

Team-bhp.com: Strut Brace Discussion

Gmpperformance.com: Porsche Strut Tower Brace

More Information:

Motorator.com: Dodge Strut Braces (Video)

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What is a rear strut tower bracket?

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