Compact size is perfect for applications with limited space. Reversible design for installation flexibility. Un-Notched necks are designed for weld in installation. If clamping, use 3" wide band clamps 18005 (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. 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 the USA and is covered by the Million Mile Warranty.