BMW 2 Series G42 / G87 3D-printable parts

Replacement stand-off spacer for fitting AUTOID rear carbon-fibre wheel-arch extensions to the BMW G42 M240i. The source is specific to that aftermarket arch kit and does not establish G87 fitment. Print in ASA, ABS, nylon, or another exterior-grade heat- and weather-resistant material, and verify the 12.4 mm diameter, 26.05 mm height, fastener engagement, arch alignment, and wheel/tyre clearance before road use.