This slip-on muffler is designed to offer a boost in mid and top-end power. Hard-anodized oval aluminum muffler shell. Cone-style end cap, Completely rebuildable, Uses stock heat shield. Uses Spark Arrestor (GYT-5XD93-23-SS), sold separately. Meets AMA®/ ATVA® 99bBA requirements, Replacement parts also available (part numbers listed with the GYTR® Race Exhaust System [18P-E46D0-U0-00]).

*This accessory is restricted to closed-course competition only. *(All YFZ450X and YFZ450R models are regulated by the EPA, Because this accessory affects emissions, using it constitutes illegal tampering punishable by law unless the vehicle is only used in closed-course competition.