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Old 07-09-2009, 03:14 AM   #17
socalwrench
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Join Date: Mar 2009
Vehicle: 2008 Mustang V8
Location: CA
Posts: 830
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The BMR springs are 1.25"/1.50". I sent them an email regarding spring rates (constant or working). Interestingly, they use the same style (hourglass) rear springs that Ford designed.
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