The Churchill 2-into-2 exhaust system is for the folks who love the classic drag pipe look but want more pipe than the average length. This system allows for a higher performance boost across the range. This exhaust system is equipped with Rinehart's proven stepped header as well as their anti-reversion louver technology that allows for all the gains. Larger diameter 2.5" muffler gives a deeper, throaty rumble Full coverage 2.5" heat shields create a sleek, clean look Features 18mm 02 ports for easy dyno tuning Bung adapter kit 544-696 required for models with 12mm O2 sensors American Made Pipes for American Made Bikes