All baffles out little reducer cone at the front in for some back pressure. Nice loud low rumble' No air injection . No air box K&N filters 155 main jet 48 pilot jet. perfect mix on the dyno and sucks up Hardleys even big bore 6 speeds with dyno tune and injection can't catch me.Mine is an 04 Speedmaster. Drill the handlebars while you are at it and hide the wires looks good.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!