Compact size is perfect for applications with limited space. Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel will never rust. 100% welded construction for strength. Free Flow design for improved performance. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. Hands down Borla(r)'s XR-1 race line parts offer the best balance of sound and power. 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.