GIBSON DOWNTURN MUFFLERS - 4 INCHES

Gibson Downturn Mufflers for 4 inch. These are clamp on mufflers. Sound is underwater while at idle. Gibson Turn Down Marine silencers slip onto your existing tips or tailpies and route the exhaust under water for silenced idling. This system does not have any internal baffling, so restriction is not an issue. Ease of installation. Tested up to 1,200 HP with no power loss. High quality Stainless Steel construction. OEM style transom mount. Straight through design. Utilizes water to dampen sound. Has been designed and flow tested to ensure maximum flow. Sold in pairs.