Fits 1986 1988 Yamaha YFM225 Moto 4 Slip on w Utility Muffler AT 7401 water pumps Barrels 4 Billet Color Hard seatbelts and accessories Barrels 4 Billet Color Hard Core Gray with Black Booster Down Leg Brand Holley Carburetor Use Professional Race CFM 850 Choke None Circuit 2 Condition New Emission Code 3 Finish Hard Core Gray Fuel Gasoline Fuel Inlet Dual Marine Use No Material Aluminum Model 4150 Primary Main Jet 84 Primary Power Valve 4 B&M has you covered with our high performance flexplate designed for 1971 1973 Chrysler Performance Sound In A Simple Package Directly replace your OEM muffler with an MBRP Utility Series exhaust and hear the voice your ATV or SXS should have had from the factory