By the time the E92 GTS rolled out, BMW M had mastered carbon composite manufacturing at scale.
Yet the GTS' trunk was metal- with a car already prohibitively expensive, it seems the engineers got stopped short.
In this Special Series, I loop in my experiences with this OE+ carbon trunk route to creating a lightweight CSL style trunk for the E9x M3.
Cheers,
- Matt / @m3_epoustouflant
Wing Reinforcements
Alsatek can add additional carbon layers by the traditional mounting points for GTS and GT4 wings. It does not have any functionality nor fitment aesthetics. It does add a few hundred grams.

In this entry, I back to my roots and DIY the test fit of the E92 OE+ Carbon Trunk in the driveway, and further compare fitment to my previous CSL composite trunk.

In this entry, we start with the basics: I cover my unboxing impressions the E92 OE+ Carbon Trunk and the little things that matter.

Alsatek is a German composite manufacturer of automotive racing components for motorsport teams.
They are focused on developing and manufacturing high quality carbon products using high end carbon manufactuirng processes.