Not sure which 2000 GMC Sierra Performance Mufflers are right for you? We have over 976 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"Very nice sounding muffler. When cruising the sound is very deep and aggressive." —Brad R from Spring, TX bought a Flowmaster Super 44 Series Mufflers for a 2000 GMC Sierra.