The Straightline Performance Complete Exhaust Kit for Ski-Doo REV Gen 4, Gen 5, and Lynx Radian 600R E-TEC models combines the High-Performance Y-Pipe, Ceramic-Coated Single Pipe, and Ceramic-Coated Lightweight Muffler into one complete performance package. Delivering a proven 8 horsepower gain and 11.5-pound weight savings, this system improves throttle response, acceleration, and overall riding performance while maintaining the quality and durability Straightline Performance is known for.