Looks like a former race bike. Anyone know what chambers those are?
https://sandiego.craigslist.org/esd/mcy/d/santee-1975-kawasaki-h1-500-mach-iii/7515420781.html
https://sandiego.craigslist.org/esd/mcy/d/santee-1975-kawasaki-h1-500-mach-iii/7515420781.html