Slim Line Racing Muffler. Designed for low profile vehicles with limited space. It features a 3 x 7.88 oval body. Necks are 3.5 tubing formed into 4.13 x 2.61 oval. Reversible design for installation flexibility. Patented Multicore design for maximum power. Recommend for high horsepower applications. T - 304 Stainless steel will never rust. 100 welded construction for strength. High temperature T - 304 stainless steel wool for sound control. Free Flow design for improved performance. There is no logo embossment on this part. Best of all, it's made in the USA. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.