Upgrade your off-road experience with the FMF Q4 Hex S/A Exhaust (Part Number 042393). Developed through years of championship racing, this exhaust system is engineered for maximum sound output and performance. Lightweight and easy to install, it is compatible with both stock and FMF headers, making it the ideal choice for racers and enthusiasts alike. Please note, this product is not legal for use in California on pollution-controlled vehicles and is intended for race use only, with a waiver available. Features: * Developed for Champions: Created through years of championship off-road racing. * Max Sound Output: Delivers a powerful sound output of 96db; most models operate below 93db. * Lightweight Design: Significantly lighter than stock exhaust systems. * Versatile Compatibility: Compatible with both stock and FMF headers. * Built-in Spark Arrestor: Includes a built-in spark arrestor for safety. * Easy Maintenance: Designed for easy repacking to maintain performance. * California Use Notice: Not legal for use in California on pollution-controlled vehicles; race use only with waiver available.