Just did mine and your post saved me time and $$$. At 1st look under the hood of my 550i I was like oh shyt gotta let the dealers do it but then looked on the forum here and found your thread and DIY. Excellent! 20 mins later and a gentle tug with pressure from an auto trim tool on the rear and both grilles are out and the new ones installed. I went with carbon fiber sport grilles I got from Modbargins. Looks really great! Thanks man.
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'13 Harley Davidson Dyna Custom - born to ride