The Straightline Performance Yamaha Viper Lightweight Ceramic-Coated Performance Muffler delivers a proven 3 horsepower gain while reducing weight by 9 pounds compared to the factory exhaust. Featuring a premium high-temperature ceramic-coated finish, a rich lower and deeper exhaust tone, and direct bolt-on installation, this lightweight muffler improves throttle response, handling, and overall performance while helping reduce under-hood temperatures.