The Straightline Performance Carbon Fiber Muffler for Ski-Doo 850 REV Gen 4 and Lynx Radian models combines a genuine carbon fiber muffler body with polished stainless steel construction to create one of the lightest snowmobile mufflers available at just 3.8 pounds. Designed for riders seeking maximum weight reduction, premium styling, and a deep performance sound, this direct bolt-on exhaust upgrade delivers exceptional heat resistance, durability, and performance. Carbon fiber mufflers are serviceable and should be inspected and rebuilt periodically depending on riding conditions and usage.