Alot of you guys are wrong . You still can get dual after market for the 92 1100. I can get for sure D&D, Micron, or kerker slip ons so far.And soon should find out about some yoshi's. But the poblem is i dont know nothing about exhaust so what do u guys recommend for the loudest? I belive they are all 4.5 in diameter. does anyone know what the staocker muffler are in diameter.