Sale Quick view Slip-on system w/Sport Muffler Yamaha YFM 400/450 Kodiak 2x4/4x4 2003-2007 & 45FG Grizzly 450 2007-2014 SKU: AT-6410SP Compare $347.99 $289.99 INSTALL INSTRUCTIONS MBRP AT-6410SP Instructions SPORT Series ATV Exhaust MBRP Sport Series mufflers offer a mild exhaust note over their Utility Series systems, taking full advantage of the reliability and dependability of a chambered design, while... Add to Cart Add to Cart Add to Wish List Add to My Wish List Create New Wish List