The FMF Powercore 4 Muffler (Part Number 044228) is designed to enhance the performance of Yamaha YZ250F, YZ450F, and WR250F models from 2006 to 2009. Crafted from durable stainless steel with a lightweight aluminum can, this muffler offers a balance of strength and reduced weight for better handling and responsiveness. Its construction ensures longevity and the ability to withstand rigorous riding conditions. The muffler features a space-age internal packing material that maximizes packing life, reducing the need for frequent replacements and maintaining optimal sound and performance over time. The Hi-Flo modular end cap and internal shape utilize advanced Hi-Flo technology, which improves exhaust flow and increases power output. Additionally, the enhanced sonic evacuation system ensures higher flow rates, contributing to increased horsepower and throttle response. For added safety and compliance, the muffler includes a removable spark arrestor, making it suitable for various riding environments. Whether you're upgrading your bike for competitive racing or recreational riding, the Powercore 4 offers superior performance, durability, and a sleek, professional appearance that complements your Yamaha motorcycle. Installation is straightforward, and the muffler's design ensures compatibility with the specified Yamaha models, providing a perfect fit for optimal performance gains and a significant upgrade over stock exhaust systems.Features:Constructed of stainless steel with a lightweight aluminum can for durability and weight reductionSpace-age internal packing for maximum packing life and consistent performanceHi-Flo modular end cap improves exhaust flow and enhances power outputInternal shape of core utilizes Hi-Flo technology for optimal exhaust flowEnhanced sonic evacuation provides higher flow rates and increased engine powerIncludes removable spark arrestor for safety and environmental compliance Fits, Yamaha WR250F 2007 Yamaha WR250F 2008 Yamaha WR250F 2009 Yamaha WR250F 2010 Yamaha WR250F 2011 Yamaha WR250F 2012 Yamaha WR250F 2013 Yamaha WR450F 2007 Yamaha WR450F 2008 Yamaha WR450F 2009 Yamaha WR450F 2010 Yamaha WR450F 2011 Yamaha YZ250F 2006 Yamaha YZ250F 2007 Yamaha YZ250F 2008 Yamaha YZ250F 2009 Yamaha YZ450F 2006 Yamaha YZ450F 2007 Yamaha YZ450F 2008 Yamaha YZ450F 2009
