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      07-14-2012, 10:28 PM   #31
swamp2
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Drives: E92 M3
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There would be nothing particularly novel about a rear aluminum subframe. I think this BMW aluminum subframe is from the 5er. That is a very long way from a full aluminum chassis of course.

The existing front subframe is already aluminum so nothing radical to change there.
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Last edited by swamp2; 07-14-2012 at 10:37 PM.