Developed with over 35 years of racing heritage, the FMF Racing Fatty Gold Series pipe is engineered for riders seeking a significant performance upgrade. This exhaust system enhances the power curve by delivering smoother, broader gains across the full rpm range, making your machine more tractable and responsive through improved low-end, mid-range, and over-rev. Developed to withstand rigorous use, the Fatty’s robust carbon steel design and nickel-plated finish make it both a top performer and a durable choice for all styles of riding.

Features

• Broadens and smooths out the entire power band for versatile performance
• Enhances low-end control, mid-range power, and over-rev
• Tru-Flo stamping process ensures perfect fitment and optimum flow
• Durable carbon steel construction with nickel plating for longevity
• Suitable for use with FMF or stock silencers (unless otherwise noted)
• O-rings included for hassle-free installation
• FMF’s most popular 2-stroke exhaust option

Specifications

• Item ID: 025073
• Type: Pipes
• Weight: 3.4 lbs
• Carb Warning: No

Vehicle Fitment

KTM

• 125 SX (2004–2010)
• 144 SX (2007–2008)
• 150 SX (2009–2010)
• 150 XC (2010)