Our Stainless muffler for the Ski Doo 850 is light and powerful. It's made of all 16 gauge stainless steel construction with mechanical baffles. It is louder than stock but has a nice deep throaty tone to it without be obnoxious. It's not a loud straight through muffler, and it sounds great! It uses all of the oem mounting positions for a very nice fit an finish. 9 lbs lighter than oem!!