M4 Exhaust Honda CBR600F4i 2004-2007 Slip on system with POLISHED muffler

M4 Exhaust for Honda CBR600F4i Standard slip on system with POLISHED muffler. Fits Honda CBR600F4i Model Years: 2004, 2005, 2006, 2007. NOT FOR SALE IN CALIFORNIA – NO EXCEPTIONS. A: The simplest way to gain performance is with an aftermarket exhaust. At M4 we take the time to make sure the performance gains you get