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. Meets AMA® / ATVA® 99dBA requirements.Fits '09 YFZ450RNote: All 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.
