Product Description

The FMF Factory Fatty expansion pipe is a high-performance exhaust component engineered to enhance engine power delivery. Inspired by the classic handmade works pipes used by factory teams, this exhaust system is designed to broaden and smooth the power curve, providing tangible performance gains throughout the entire power band. It delivers increased low-end torque, improved mid-range pull, and enhanced over-rev capabilities compared to stock exhaust systems. The pipe is constructed using a lighter 20-gauge steel for the body to optimize weight and performance, while utilizing slightly thicker 19-gauge steel for the header section to maintain structural integrity. The design features hand-pounded seams to ensure smooth flow transitions, reducing exhaust gas turbulence. Please note that this pipe features a raw metal finish, which is intended to develop a unique patina over time. Please verify fitment for your specific application before purchasing.

Key Features

• Broadens and smooths the overall engine power curve
• Increases low-end, mid-range, and over-rev performance
• Constructed with lightweight 20-gauge steel body
• Hand-pounded seams for optimized exhaust flow

Why Choose FMF 78-1547F - Factory Fatty Expansion Pipe?

The FMF Factory Fatty pipe provides a professional-grade performance boost by smoothing out power delivery and increasing usable power across the entire RPM range. Its race-proven construction offers the authentic 'works' look and feel favored by competitive riders.

Specifications

Brand	FMF
Part Number	78-1547F
Condition	NEW
Notes/Other	This pipe features a raw, unplated finish that will require maintenance to prevent surface rust. Professional installation is recommended to ensure proper alignment and seal. Use with an appropriate aftermarket silencer for optimal performance results.

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