Samson is the leading manufacturer of Harley mufflers offering a vast selection of styles that offer performance and the perfect look. From straight-through wide open performance to mufflers that reduce DB levels without any loss in performance to meet any demand, Samson has something for everyone. Patented muffler design creates negative pressure that scavenges exhaust gases for increased horsepower, torque and fuel mileage. Awesome deep tone is pulled off by separating and controlling low-pressure power robbing atmospheric pressure.