Fits into the end of exhaust pipes and some mufflers to reduce noise level and offer a minimum performance restriction. Installs in minutes with the included nut and bolt. Exhaust Baffle measures 1-3/8" OD x 8" Long Fits 1-1/2" O.D. Exhaust pipes & mufflers that will accommodate the dimensions listed above. SOLD AS A PAIR We also offer a 4” SHORT Baffle