2005-2011 Arctic Cat M5/M6 EFI/M7 EFI/CARB/M8 EFI/800 EFI/500 EFI/600 EFI Mountain Muffler summit The Sport Pro Muffler offers

The Sport Pro Muffler offers a unique deep throaty sound with moderate manners in the lower RPM and more aggressive sound in the mid to higher RPM’s

Stock Muffler: 13

2016-2020 Defender DPS HD8

Dyno proven design netting up to 3 additional HP

Stock Muffler: 20

2005-2011 Arctic Cat M5/M6 EFI/M7 EFI/CARB/M8 EFI/800 EFI/500 EFI/600 EFI Mountain Muffler summit The Sport Pro Muffler offers2005 2011 Arctic Cat M5 M6 EFI M7 EFI CARB M8 EFI 800 EFI 500 EFI 600 EFI Fits: 2005 2006 M5 2005 2011 M6 EFI 2005 2006 M7 EFI Carb 2007 2009 M8 EFI Crossfire 800 EFI Sno Pro 2007 2009 Crossfire 500 EFI 2007 2011 Crossfire 600 EFI Sno Pro This muffler is a super lightweight, straight through flow design with an aggressive exhaust note. System fits securely in the stock location using stock mounts and is guaranteed to provide performance levels as good