Supertrapp Exhaust

4-stroke silencer core kit Twelve (12) 3" discs included For use with the following Universal 3M Steel Dirtbike Muffler: #317-0875; 0.88" (22.2mm) inlet diameter #317-1000; 1.00" (25.4mm) inlet diameter #317-1125; 1.13" (28.6mm) inlet diameter #317-1250; 1.25" (31.8mm) inlet diameter #317-1375; 1.38" (34.9mm) inlet diameter #317-1500; 1.50" (38.1mm) inlet diameter #317-1625; 1.63" (41.3mm) inlet diameter #317-1750; 1.75" (44.5mm) inlet diameter #317-2000; 2.00" (50.8mm) inlet diameter