Description
Experience top-tier performance and authentic sound with the FMF 4-Stroke Factory 4.1 Muffler, designed specifically for Yamaha YZ250F, YZ450F models from 2006 to 2009, WR250F 2007 to 2013, and WE450F from 2007 to 2011. This muffler features an anodized stainless steel finish that combines durability with a sleek, factory-inspired look, making it ideal for those who want both function and style.
FMF Racing’s Factory 4.1 muffler is engineered to increase exhaust flow and optimize engine performance, giving your bike a noticeable boost in power and throttle response. Its construction emphasizes longevity and resistance to wear from tough trail and track conditions. Whether you’re tuning your bike for racing or trail riding, this muffler meets high standards for quality and efficiency.
The muffler’s streamlined design ensures an aggressive exhaust note without overwhelming noise, helping you stand out in the crowd but still comply with many noise regulations. Installation is straightforward, and the product fits perfectly with OEM configurations thanks to precise engineering and tested compatibility. Upgrade your Yamaha’s performance with an exhaust component trusted by riders who demand excellence and reliability from their gear.
Choose the FMF 4-Stroke Factory 4.1 Muffler to enhance your bike’s performance, durability, and sound profile, backed by FMF Racing’s reputation and craftsmanship.
Explore more from our collection.




Reviews
There are no reviews yet.