Maximum exhaust flow is achieved through MBRP's exclusive sound attenuation design. Uses stock springs and hangers. Flo-bench tested for back pressure.The item "MBRP Race Muffler Ski-Doo F chassis Z Summit 583 670 SS STX (End dump) 1995-1996" is in sale since Thursday, February 14, 2019. This item is in the category "eBay Motors\Parts & Accessories\Snowmobile Parts\Exhaust". The seller is "rpm-powersports" and is located in 68106. This item can be shipped to United States.