[ProjectM96]

Porsche does not supply vinyl rear window. They replace the entire top.

I have successfully replaced my vinyl rear window with another DOT approved rear window for $300 total at a shop in Philadelphia, PA called Rydon. It was an auto and marine upholstery shop.

They did require to take the entire top off so it took them about 4 or 5 hours to do the job. I have been driving for 3 months with the new vinyl rear window and so far there are no leaks or problems and visibility is clear. It looks like new.

BUT, I still have to manually push the vinyl window down to help it fold correctly when opening the power top because it can still crack even in warm weather.