FMF Gold Series Fatty™ Pipe is a premium 2-stroke expansion chamber designed to boost performance with a proven, race-inspired shape. It’s computer-designed and dyno-tested to help deliver power gains where each machine benefits most, giving you stronger, more responsive performance on track or trail. Thanks to FMF’s Tru-Flo stamping process, you get an accurate fit and consistent exhaust flow for reliable results.
Built from strong 19-gauge steel and finished in nickel plating, this pipe is made to handle hard riding conditions while keeping a clean, durable look. If you’re refreshing a worn exhaust or upgrading for better performance, the Fatty pipe is a trusted choice for riders who want measurable gains without guesswork.
Key features:
✅ Computer-designed and dyno tested to create power gains where your bike needs them most
✅ Tru-Flo stamping process for a precise fit and optimum performance
✅ Strong 19-gauge steel construction with a nickel-plated finish
Benefits of use:
🔹 Improved throttle response and overall engine performance through optimized expansion-chamber design
🔹 Easier installation and fewer fitment hassles thanks to precise forming and consistent dimensions
🔹 Durable construction and protective finish for demanding off-road riding conditions
Technical specifications:
📌 Brand: FMF
📌 Model: Gold Series Fatty
📌 Product type: Pipe / Head pipe (expansion chamber) kit
📌 Material: Steel (19-gauge)
📌 Finish: Nickel / Nickel-plated
📌 Configuration: 1-into-1 system
Why choose this product?
⭐ Proven FMF performance development (computer-designed and dyno-tested)
⭐ High-quality construction for long service life in motocross/enduro use
⭐ Designed for riders who want a reliable fit and real-world power improvements
