Big Gun ECO Slip-On Exhaust System - Polaris RZR800/S/4 2008-2012 - Aluminum - 2119320Economically priced high quality slip-on exhaust systemQuiet 98dbs track and trail legal (with Vortex Quiet Insert P/N 62-0496 sold separately)USFS forestry approved screen type removable spark arrestor includedTig welded stainless steel pipe construction6061 brushed aluminum muffler housingBlack satin steel muffler tipSlip fit mid-pipe design allows movement of sub frames and prevents breaking exhaust systems3 to 6 horsepower increase on most models6-month manufacturers warranty