Vito's Performance Products 22001 Universal High Flow Exhaust Tip Slip In High Flow Super Stinger Fits Many Yamaha 4 Stroke Factory Mufflers - Bigger Outlet With Coarse Screen Outflows Stock Outlet By 75 Percent  Bigger Sound - More Horsepower For 48MM Muffler Stinger Mounting Holes And 120MM Of Internal Clearance For Length Fits 350 Raptor 350 Warrior 660 Raptor YFZ450 700 Raptor Item Is Not Us Forestry Approved Down Turned Stainless Outlet To Help Sound Output