Black Widow performance mufflers feature a unique internal hourglass design to provide straight through airflow. The design combines an ideal balance of exhaust velocity and exhaust volume with acoustic sound wave deflection to create a distinctive sound unlike any other muffler on the market today. With a mild tone at idle, the Black Widow mufflers come alive upon acceleration and give you the deep aggressive sound you’re looking for. All mufflers are manufactured in the USA using heavy-duty 14-gauge stainless steel. Available in several inlet and outlet configurations to suit your application, each muffler is backed by an unprecedented 2-million mile warranty. Venom Series: Venom Series mufflers feature a rounded and fully-welded outer casing manufactured in durable 430 stainless steel. Available in center/center and side/center configurations, each muffler features a brushed finish as well as an embossed Black Widow logo on one side, while the other remains smooth. Choose the 250 series for a 14” long body, or the 300 series for a 16” long body. Pro Venom Series: Pro Venom mufflers are manufactured in 304 stainless steel and feature a square body design with fully-welded seams for an outstanding appearance. Each muffler is fully polished to a show-quality finish and features an embossed logo on each side. Available in center/center and side/center configurations, these mufflers are the flagship design of the Black Widow line. The 250 series gives you a 14” long body, while the 300 series provides a 16” long body.