I've a set of black chrome pipes that are marked in yellow marker "kz1100". The only numbers stamped into them are kzt 10b 1100 and khi k 025. I called the dealer in town and he said he could'nt find anything about what the pipes fit using the numbers above. I need to know what bikes they fit so I can sell them. He did say gpz had a different pipe than either the spectre or the kz. I could have swore someone in the forum stated that pipes like these fit many models, but I need to be sure. I have 100% feedback on ebay and don't want to have to return anything as everyone who had bid wanted to know what they fit.