From the pictures it looks more like the muffler tips were dipped in chrome instead of fastened on. Plus the two tips look flared making it impossible to get such a tight fit with no seam.

Just my guess...

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'05 X3 3.0i Alpine White/Gray Leather/Alum. Trim
Sport/Steptronic/Servotronic/Panoramic
Prem. Sound/Staggered 18" Style 114 Y-Spokes