Vibrant Performance 1126 VP 20" STREETPOWER Universal Mufflers Offset Vibrant Performance StreetPower Oval Muffler 2.5" Inlet Outlet (Center Evasive Motorsports: Vibrant Streetpower Oval Muffler w 4 Round Angle VIBRANT PERFORMANCE STREETPOWER Oval Muffler 2.5in inlet outlet 1126 Vibrant Performance 1149 Streetpower Flat Black Oval Muffler with Dual Tips Vibrant Muffler. 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.