aircraft stripper or automotive stripper. you can get it at the "depot" or auto paint store. i dont recommend it, not only does it prevent rust but it hold heat.
your best bet is to pick a clear vht finish when your done stripping it.
look at the pj1 site for vht paint.
hey dood, i sand blasted my 04RM250 pipe tonight as well as my friends 02CR125 pipe.. they turned out grainy after the sandblast but i took some really fine sandpaper too it and it came out to a works look in one section, so tomorrow im going to sand it all down and make it perfect/./ i just bought a digital camera tonight so i can take pictures after! just remind me by posting in this topic and ill get an email to check it and remember