Chromoly chassis, one piece fiberglass body. Comes complete minus motor and clutch. Set up with 415 chain, reverse driven. Gerdleman peddles. Built with the best of everything in mind. Very successful car for us and always went right through tech with no issues. Can hold a driver to 6' 240-50 pretty comfortably. My sons have aged out, but my youngest is 6'1" 280 and can get in it, but not really comfortably. The boys are too old and everything is going, if you need something, ask, I might have it.