What does HONMAM 1500 stamped on exhaust pipes mean

What does HONMAM 1500 stamped on exhaust pipes mean

I have 2 exhaust pipes and each is stamped with information regarding emissions. The pipes probably came from a bike from the 1990’s or early 2000’s. There is a lot of info stamped on the pipes and one line says installation of this exhaust system on motorcycles models not specified may violate federal law and it list the exhaust system for the following motorcycle HONMAM 1500. What kind of motorcycle is this for?