2021 Ski-Doo Freeride 165 850 E-TEC Turbo Catalyst Grey The 2021 Ski-Doo Freeride 165 850 E-TEC Turbo was one of the most aggressive mountain sleds of its era, built for steep-and-deep riding, technical terrain, drops, and boondocking. It was among the first production snowmobiles to offer a factory-built turbocharged two-stroke engine. Features May Include: - Factory turbocharged 850 E-TEC engine - Short tunnel design for improved deep-snow maneuverability - One-piece lightweight hood - Smaller-diameter handlebars - Low mountain strap - QRS Vent Plus clutch system - DS 3 skis - LinQ attachment points - Lightweight deep-snow sea