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Old 10-09-2017, 03:56 AM   #10
andakn
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Join Date: Nov 2015
Location: missouri
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The perch is the cup of the strut that the spring sits in. On non m3 struts it is wider to fit the wider springs and its also flared out. When you add the m3 offset mounts the flared part of the strut will hit on the inside rear of the strut tower.
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