The Straightline Performance Yamaha Mountain Max Lightweight Ceramic-Coated Performance Muffler delivers an incredible 18-pound weight savings while reducing under-hood temperatures and improving throttle response. Featuring a premium high-temperature ceramic-coated finish, a deep performance exhaust tone, and a simple direct bolt-on installation, this muffler requires no fuel programming or tuning, making it the perfect upgrade for riders seeking maximum performance and reduced weight.