Vibrant Performance StreetPower Oval Muffler 2.5" Inlet Outlet (Center Vibrant Streetpower Flat Blk Muffler 9.5x6.75x15in Body 2.5in In ID 3in Unboxing Vibrant Performance StreetPower Oval Muffler 2.5 Vibrant Streetpower Oval Muffler with Dual 3" Tips Sleeka Spares Vibrant Performance 1129 VP 20" STREETPOWER Universal Mufflers Offset. Vibrant Performance has one of the most complete offerings of mufflers & resonators for all segments of the industry. Our "true straight through" internals feature a stainless steel perforated tube that is wrapped in our premium quality, multi layer sound suppression materials that will produce a low, deep tone while allowing for unrestricted flow and maximum horsepower. Vibrant Performance mufflers & resonators are the perfect fit and suitable for all naturally aspirated and forced induction applications.