Review on 🚙 Flowmaster 52558 2.5 In/Out 50 Series Muffler Suv/Pf - Enhance Your Vehicle's Performance by Matthew Maxwell

While the length and offset match the Nissan Frontier, the standard muffler has an outside diameter of 2 3/8 inches. A 2 1/2" OD adapter will work, but I used fiberglass tape to make up the difference. Seems to work with no leaks. Sound is pleasant. Smooth as stock at idle or at low throttle openings. There is a slight growl when opening to be heard. Softer than a Borla S type muffler, but louder than a touring muffler. I find this to be a good compromise in terms of volume. At motorway speed, the drone was invisible. I'll try to get an audio clip to upload.