Big Gun Exhaust EVO Utility Exhaust System for 2009-21 Polaris RZR 170 - 12-7172 2009 Yamaha YFM400 Big Bear 4x4 After installation of the ESR819

After installation of the ESR819 you will notice a stable voltage across the RPM range perfectly matched to what your battery needs to see as a charge rate

2002 Ski-Doo MX Z 600 Trail

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2001-19 Yamaha WR250F

Big Gun Exhaust EVO Utility Exhaust System for 2009-21 Polaris RZR 170 - 12-7172 2009 Yamaha YFM400 Big Bear 4x4 After installation of the ESR819Big Gun Exhaust EVO Utility Series Slip On System High temp black thermal coated oval shaped aluminum muffler with a black powder coated stainless steel end tip 304 stainless steel mid pipe with TIG welded reinforced muffler bracket(s) Massive horsepower and torque gains but lighter than stock exhaust in a sleek muffler design allows for maximum clearance Includes removable screen type USFS approved spark arrestor and Vortex Quiet Insert Handmade in