FMF Factory Fatty Pipe 025239 - KTM / Husqvarna / GasGas 125/150 2019-2023

Product Description

The FMF 025239 Factory Fatty Pipe is engineered to deliver the legendary 'works' or cone pipe performance trusted by factory teams, providing your motorcycle with enhanced power and responsiveness across the entire powerband.

Built using lighter 20-gauge steel for the body and robust 19-gauge steel for the header portion, it features hand-pounded seams for smooth flow transitions. This precision design broadens and smooths out the power curve, boosting gains with more low-end pull, stronger mid-range, and increased over-rev.

Top Features: FMF Factory Fatty Pipe

• Modeled after factory 'works' and cone pipes for elite craftsmanship and material quality.
• Constructed with a lighter 20-gauge steel body and a durable 19-gauge steel header portion.
• Hand-pounded seams ensure smooth exhaust gas flow transitions and maximum scavenging efficiency.
• Broadens and smooths the power curve to deliver increased low-end, mid-range, and over-rev performance.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: Is this exhaust pipe compatible with TPI fuel-injected models?
A: No, this pipe is strictly designed for carburetor-equipped bikes and is not for use on 150 TPI machines.

Q: What performance improvements can I expect from the Factory Fatty?
A: It broadens and smooths out the power curve, delivering noticeable gains in low-end throttle response, mid-range pull, and top-end over-rev.

Expert Pro-Tip: When installing your new expansion chamber, always replace the o-rings at the exhaust spigot and use high-temp silicone to prevent carbon buildup and minor exhaust leaks that rob power.

Recommended Pairings:

• KTM 2-Stroke Performance Parts & Upgrades
• Husqvarna 2-Stroke Performance Parts & Upgrades
• Gas Gas 2-Stroke Performance Parts & Upgrades

About Moto-House MX

At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their machines. We pride ourselves on great customer service, and every item ships FAST - straight to your door.

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