Fitment: (2008) Ski-Doo MXZ X / Adrenaline 600HO SDI / 800R SDI / REV XP 600 & 800 SDI. 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 as or better than stock. GGB Mountain mufflers are designed to be used in areas where increased sound levels are not an issue. These cans are loud when you open the throttle. Please use accordingly. Sound level increase over stock (dbA) Idle + 4-6 / Under load + 10-18. Features: Increased throttle response, Aggressive exhaust note, Huge weight savings, No fuel mods, Simple install, Secure fit.