MBRP 87-89 Honda TRX 350D FourTrax Foreman 4x4 Direct Replacement Slip-On Exhaust w/Utility MufflerMBRP 87 89 Honda TRX 350D FourTrax Foreman 4x4 Direct Replacement Slip On Exhaust w Utility Muffler 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. ATV Exhaust System With Utility Muffler; Slip On; Direct Replacement; 1. 25 in. Inlet; 3. 5 in. Diameter Body; Chambered Muffler; Chambered Muffler. Fitment: Honda TRX350D Base