

Description
The Gold Series Fatty expansion chamber FMF was developed for motocross and enduro motorcycles, offering improved performance throughout the entire rev range. Its design broadens the powerband, improves throttle response and provides more linear power delivery, achieving an excellent balance between low, mid and high revs.
Made from 19-gauge steel with a nickel-plated finish, it combines high strength with excellent corrosion protection. Its Tru-Flo manufacturing process ensures a precise fit and optimized gas flow for maximum performance specific to each motorcycle.
The Gold Series Fatty is the most popular expansion chamber from FMF thanks to its versatility, adapting equally well to track use and enduro rides. It is also supplied with O-ring gaskets (O-Rings) to facilitate installation and ensure a perfect seal for the exhaust system.
Data sheet
Specific References
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