The Straightline Performance Ceramic-Coated Lightweight Muffler for Arctic Cat ZR and XF models with the 7000 Series engine package delivers a proven 3 horsepower gain and 8-pound weight savings. Featuring a premium ceramic-coated finish, deep refined exhaust tone, improved throttle response, and direct bolt-on installation, this muffler provides an excellent combination of performance, durability, and trail-friendly sound.