Sport suspension/TÜV registration

Hello. I bought a sports suspension a few days ago and it arrived yesterday. Now I just wanted to ask before I had it installed/installed, how much the registration at the TÜV costs approximately and what I need everything for it. With the sports suspension (60/40 for my audi 80 b3) there was only a part report there. Because I have no idea of such a thing since one had to register with scooters earlier nix would be happy to answer lg hoLLyKane