Direct Replacement Slip-On W/Utility Muffler For 86-87 Honda TRX 350 FourTrax 4x4 87-89 Honda TRX 350D FourTrax Foreman 4x4 MBRPPerformance 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. Fitment: 1986 1987 Honda TRX 350 FourTrax 4X4 1987 1989 Honda TRX 350D FourTrax Forman 4X4 Product Info: ATV 7000 Series Utility Muffler Black Coated Slip on 12. 15 Inch Body Length 3. 5 Inch Body Diameter 1. 50 Inch Inlet OD Hardware Included Chambered Muffler Improved Sound