What Pax showed is what's under there. It has the exterior board then under is a support skeleton. The support is different for running boards and the side skirts. My wife also hated the running boards her pant legs were always getting dirty. So I got the narrow side skirts it took a couple hours in my drive way to do the swap you need a hand to make life easier though. I made wife help out much to her dismay
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X5M, Eisenmann exhaust, 22" HRE wheels, catless down pipes, Stage II tune/X5 Diesel, Lowered & Tuned