There are a few on German Ebay for sale. They just pop right off. I popped mine off and replaced it with the 5 series ones that Logan made.
14 F15 X5 3.5i M-Sport SG Terra, Fineline Oak, Driver Pkg, Prem. Pkg, H/K, Spare, 20" 469M Rims, Park Assist, Surround View, Shades MODS Performance Black Grille & Rocker Panel Decals, Painted Reflectors, 3M Bra, Black OEM X5 Frame