MBRP 98-99 Kawasaki KLF 400 Bayou 4x4 Direct Replacement Slip-On Exhaust w/Utility MufflerMBRP 98 99 Kawasaki KLF 400 Bayou 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: Kawasaki KLF400 Bayou 4x4