Sale Quick view Slip-on system w/Sport Muffler Yamaha Rhino 660 2004-2007 SKU: AT-6411SP Compare $347.99 $289.99 INSTALL INSTRUCTIONS MBRP AT-6411 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