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Old 06-30-2015, 04:51 PM   #19 (permalink)
jonjiang
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Join Date: May 2009
Location: NorCal
Posts: 17
Drives: 09 370z Black M6
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I'm thinking the lip was designed to take some wear and tear. It's made of flexible plastic that can take some abuse.

I use mine as an indicator of low clearance. If I hear it scrape, I slow down.
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