There are also interior cosmetic items available such as different trim and aluminum door plates. With how many options Porsche gives for the interior these items do not even seem necessary but some people are into brand names so those Techart labeled door sills will appeal to such people.
Techart also has 21 inch wheels available for the 991 Turbo. It's interesting that 21 inch wheels do not even seem out of place on a Porsche 911 these days. To really highlight the wheels a lowering module is necessary and that is likely coming soon.
Enjoy the pictures below.