FMF 022070 Factory Fatty 2-Stroke Exhaust Pipe

The FMF Factory Fatty is a performance 2-stroke exhaust pipe inspired by the legendary "works" cone pipes once reserved exclusively for factory race teams. Engineered and manufactured in FMF's Southern California facility, this pipe delivers true works-style technology in a bolt-on package, broadening and smoothing the power curve for gains across the entire power band — more low-end, more mid-range, and increased over-rev.

Key Features:

• Reminiscent of the classic "works" or cone pipe used by factory race teams
• Lighter 20-gauge steel used for the body of the pipe
• 19-gauge steel used for the header portion for added strength where it matters most
• Hand-pounded seams for smooth flow transitions and superior exhaust flow
• Raw, unplated, oiled finish — no coating that can chip or discolor, just like a true works pipe
• Broadens and smooths the power curve for more tractable, controllable power delivery
• Boosts gains throughout the entire power band: more low-end, more mid-range, and increased over-rev
• Includes O-rings on most models for a flawless, leak-free fit
• Made in the USA

The Factory Fatty is the ideal first modification for any 2-stroke rider looking to maximize power output in the lightest possible package. Pipe may include factory indentations for proper installation clearance. For off-road use only.