FMF Racing KTM 125 SX 2004-10/144 SX 2007-08/150 SX/XC 2009-10 Factory Fatty Pipe

This is the FMF Racing Factory Fatty pipe, specifically made for your KTM 125 SX from 2004 to 2010, your 144 SX from 2007 to 2008, and your 150 SX/XC from 2009 to 2010. This pipe is designed to give your two-stroke engine a noticeable boost in performance and that distinctive FMF sound you're looking for.

FMF builds this pipe using a combination of steel gauges to get the best results. The header section uses a strong 19-gauge steel, which helps handle the heat and pressure right at the cylinder. Moving further back, the body of the pipe uses a lighter 20-gauge steel. This lighter material helps achieve that classic, crisp FMF sound that riders love, while the hand-pounded seams ensure smooth transitions for better exhaust gas flow. This attention to detail in construction means you get improved performance and a well-built pipe that's ready for the track or trail.

When you install this pipe, you'll notice it comes with O-rings to help seal the connection. Make sure to check your existing hardware and any other components you might need to complete the installation, as this pipe is designed to work with your specific KTM model.