Upgrade your YFZ450R with the FMF Powerbomb Header S/S, designed specifically for the 2009 model year. This high-performance exhaust system enhances your ATV's horsepower by up to 10%, thanks to its proprietary technology that increases exhaust flow. The innovative Powerbomb design reduces sound output by as much as 1.5 dB per muffler, making it a perfect choice for those seeking a quieter ride without sacrificing performance. Featuring a modular exhaust port flange, this header ensures reliable operation and minimizes vibration. Please note, this product is not legal for use on pollution-controlled vehicles in California and is intended for race use only, with a waiver available. Features: * Feature 1: Powerbomb increases horsepower up to 10% * Feature 2: Proprietary technology to increase flow * Feature 3: Powerbomb per-muffler lowers sound output by as much as 1.5 dB * Feature 4: Modular exhaust port flange for reliability and less vibration * Feature 5: Not legal for use in California on pollution-controlled vehicles, race use only in California - waiver available