MBRP 99-01 Ski-Doo ZX Chassis/MXZ/Formula Z/Summit/Formula Deluxe/600 Trail Series Slip-On ExhaustPerformance And Sound For The EnthusiastDial up the performance of your snowmobile and enjoy a moderate, deeper exhaust note with an MBRP Trail Profile muffler. Save weight, gain performance and sound whats not to love? This Part Fits: Year Make Model Submodel 2001 Ski Doo Formula Deluxe 500 Base 2000 2001 Ski Doo Formula Deluxe 600 Base 1999 2001 Ski Doo MX Z 500 Base 2001 Ski Doo MX Z 500 Fan Base 2001 Ski Doo MX Z 500 Trail Base 1999 2001 Ski Doo