Malibu Response LXi,TXi, silent boat exhaust Kit. Made of stainless steel and black powder coated. Simple installation, remove the screws that hold the swim platform and the two exhaust rubber flaps. Screw on the new exhaust ports and put the swim platform on top of the support bar. If your boat has a wedge it is still usable. Makes the boat extremely quiet by allowing the exhaust to go into the water.