The Factory Fatty 025076 by FMF Racing is engineered for riders who demand top-tier performance reminiscent of elite “works” or cone pipes. Its advanced craftsmanship and use of premium materials are designed to broaden and smooth the power curve, delivering increased power and enhanced throttle response across the entire rev range. With improved low-end torque, strong midrange, and greater over-rev, the Factory Fatty is well-suited for various riding styles.

Features

• Crafted from lightweight 20-gauge steel for the body
• Utilises robust 19-gauge steel for the header
• Hand-pounded seams ensure optimal flow transitions
• O-rings included for most models
• Smoother, broader power delivery across the range
• Reliable FMF construction for race and trail durability
• Item ID: 025076
• Type: Pipes
• No carburettor compliance warning
• Weight: 3.5 lbs

Specifications

• Main body material: 20-gauge steel
• Header material: 19-gauge steel
• Construction: Hand-pounded seams
• Weight: 3.5 lbs
• O-rings: Included

Vehicle Fitment

KTM

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