I just replaced my top for a 2000 S2000. I understand there is a soft roll to place in the folded window to protect it. Where can I find?

 

I think it is just like a water noodle that people cut to length, with a small carpet or towel placed on the rear tray to protect the window from scratches.

Get yourself some Plexus protectant, it works great on plastic windows, with UV protection and a cleaner and wax protectant all in one.

 

Zero is correct.People sometimes use a swimming noodle so the window does not rub against itself. 14 years ago a vendor sold a specially made carpet for the window tray called a "Muz Mat", I'm sure some MY2000-01 owners have it back there and don't know it. A regular carpet or soft cloth would probably do the trick if you stick it down. I have never used the noodle and my window is fine. I do have the special carpet for the window tray area.