Designed to mitigate Stress applied to trunk floor pan and rear differential mounting point as well as Strengthen Rear Chassis between the shock towers. Specifications: Designed to fit on E30 Chassis coupes, sedans and M3 from 9/87 with no prior collision damage.
Price $450 +S&H
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E30 Rear Brace ststem with floor mount available here
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" I was a naysayer on rear shock braces until late 1997, my thinking was that the shocks would not transmit the kind of forces that the brace seemed to be designed to mitigate...
Then I had to concede that they had some effect after it was demonstrated for me that there was compliance in that area...
Then... In 2005 (after doing some extensive testing on my own) I found that there was a very good reason for lateral reinforcement in this part of the chassis... It mitigates flex transmitted from the sub-frame causing twisting around the axis of the rear "Bulk head"... Even in moderate driving conditions."
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