Vibrant Performance 1094 STREETPOWER Oval Muffler Radiant Speed Works Vibrant StreetPower Oval Muff 6inx10inx24in long body 3in IDxdual 2.5in Vibrant Performance 10535 Vibrant Performance StreetPower Performance Vibrant Performance 1145 STREETPOWER Flat Black Oval Muffler Walmart.com Unboxing Vibrant Performance StreetPower Oval Muffler 2.5. 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.