S&S Cycle Grand National 4 Slip-On For Harley Softail The S&S Cycle 4-inch Grand National slip-on gives a Softail a race-inspired rumble with serious street presence. Built with S&S Cycle's proven engineering, it improves exhaust flow to sharpen the bike's performance without giving up its classic style. It makes its presence known the moment the throttle opens. Features: Created to perfectly complement this blend of tradition and technology using advanced engineering experience to enhance performance, sound, and overall riding experience Designed to optimize exhaust flow and give your Softail a distinct aggressive sound while staying true to its iconic roots 4 muffler shell Race-inspired Grand National endcap design Removable dB reducer included (J2825 compliant) All hardware and gaskets included Made in the USA