KTM FMF Racing Factory Fatty 2-Stroke Exhaust Pipe
Unlock race-level performance with the KTM FMF Racing Factory Fatty 2-Stroke Exhaust Pipe—a premium upgrade designed to deliver the power, control, and sound that serious riders demand. Originally reserved for factory race teams, this "works-style" pipe combines handcrafted quality with cutting-edge engineering to boost horsepower and broaden your power band across all riding conditions.
Key Features:
- Factory-Grade Construction: Crafted with hand-pounded seams and a raw carbon steel finish for true race-inspired aesthetics and performance
- Variable Gauge Steel Body: Lightweight 20-gauge steel body and 19-gauge steel header provide ideal strength-to-weight ratio
- Optimized Flow Design: Seam transitions are hand-formed to ensure maximum exhaust flow and power output
- Signature FMF Performance: Broader, smoother power band with strong gains in low-end torque, midrange punch, and over-rev
- Raw Finish: Unplated surface gives your bike that authentic factory race look
- Includes O-Rings: All necessary seals for a proper fit and easy installation
- Made in the USA: Handcrafted by FMF Racing for unmatched quality and durability
How It Benefits Your Powersports Vehicle:
- Enhances Throttle Control: Delivers more usable, tractable power across the RPM range
- Improves Low-End and Midrange Pull: Ideal for technical trail riding, MX tracks, or aggressive enduro terrain
- Race-Ready Sound: Signature FMF tone that complements the pipe’s performance
- Lighter Than Stock: Reduced weight enhances overall handling and responsiveness
- Built for Serious Riders: Designed for those who want factory-level performance without compromise
Whether you're racing motocross, blasting through the woods, or attacking a hard enduro course, the FMF Factory Fatty gives your KTM the performance edge and durability of a true pro-level exhaust system.
| Specifications | |
|---|---|
| SKU | A40005907001 |
| Brand | KTM |
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Part Numbers
| SKU | MPN | Availability | In-Store Pickup | |
|---|---|---|---|---|
| A40005907001 | 1 In Stock. Ready to ship. | - | ||
| A44005907001 | A44005907001 | Unavailable. | - | |
| A42005907001 | A42005907001 | Unavailable. | - |




