Quick view Direct Replacement Slip-on w/Utility Muffler Yamaha YFM 200/225 Moto-4 1985-1990 SKU: AT-7401 Compare $239.99 UTILITY Series ATV Exhaust Designed to be a replacement muffler with similar sound levels to stock, but with higher flow. Higher flow means more power. If you want even higher flow and more aggressive sound, take a look at the Sport Series or Performance... Add to Cart Add to Cart Add to Wish List Add to My Wish List Create New Wish List