Compact size is perfect for applications with limited space. Reversible design for installation flexibility. Notched necks for easy clamp-on installation using 1" wide band style clamps 18330 (clamps not included). 100% welded construction for strength. It features a straight through performance design and is constructed of T-304 stainless steel for high durability and includes notched inlet and outlet necks to allow for easy installation using 1" wide band clamps (clamps not included). It utilizes continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. As with all Borla® mufflers and resonators, it is made in the USA and is covered by the Million-Mile Warranty.