BACK IN THE DAY WHEN COBRA MADE EXHAUSTS FOR ATC'S THE "SAME" MUFFLER (THAT CAME WITH A HEADER PIPE) WOULD FIT ALL THE BELOW LISTED MODELS, SO IN MY OLD MIND I WOULD THINK WITH A LITTLE TWEAKING OF THE STOCK HEADER PIPE THIS KIMPEX 078532 MIGHT WORK ON SOME OR ALL ON THIS LIST OF ATC'S ??? * •1980 Honda ATC185 •1981 Honda ATC185S •1982 Honda ATC185S •1983 Honda ATC185S •1981 Honda ATC200 •1982 Honda ATC200 •1983 Honda ATC200 •1982 Honda ATC200E Big Red •1983 Honda ATC200E Big Red •1984 Honda ATC200ES Big Red •1984 Honda ATC200S •1985 Honda ATC200S •1986 Honda ATC200S