Welcome to LCcycle.com my name is Larry Cook. I believe I engineer the finest quality after market exhaust systems for the United Motors and Hyosung 650 motorcycles that can be found anywhere in the world. I use an exclusive built in back pressure device that assures superior flow and gives the bike a deep rich sound. Each exhaust system is available for use with the standard carburetor or is available with our performance carburetor Jet Kit.