The Empi Phat boy back box, this is not a quiet exhaust pipe! It will add a deep tone to your exhaust with an increase in volume too. The exhaust is designed with much better exhaust flow in mind making it a great performance upgrade.
Please not that this is a 3 bolt flange (top bolt at 1 o'clock) This will not fit on standard exhaust systems and are designed to fit on 4 into 1 exhaust manifolds with the correct flange.
