FMF Factory Fatty Rev Pipe 025240 - Gas Gas / Husqvarna / KTM 125cc-150cc 2019-2023

Product Description

Maximize your machine's top-end output with the FMF Factory Fatty Rev Pipe. Engineered to focus power delivery squarely in the middle and upper RPM of the power band, this expansion chamber is built for riders who need more time between shifts during deep berm or sand riding.

Manufactured using FMF Racing's advanced Tru-Flo stamping process, this nickel-plated steel head pipe guarantees a precise fit and optimized exhaust scavenging. Extensively dyno and track tested, it delivers uncompromising off-road performance for aggressive two-stroke riders.

Top Features: FMF Factory Fatty Rev Pipe

• Focuses power delivery in the middle and upper RPM of the power band
• Ideal for riders looking for extended pull between shifts in deep berm or sand conditions
• FMF Racing's Tru-Flo stamping process ensures a precise fit and optimum performance
• Rigorously dyno and track tested for every specific application
• Includes O-rings for a complete and secure seal

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. As noted by the manufacturer, this pipe is strictly for use on carburetor-equipped bikes and is not designed for 150 TPI machines.

Q: Does the expansion chamber include necessary seals for installation?
A: Yes, this unit includes O-rings to facilitate a leak-free fit against the cylinder exhaust port.

Expert Pro-Tip: When installing a new expansion chamber, always replace the exhaust springs along with the included O-rings. Worn or stretched springs allow the pipe to vibrate, creating gaps that leak dross and compromise upper-RPM backpressure.

Recommended Pairings:

• Gas Gas 2-Stroke Performance Parts
• Husqvarna TC 125 Performance Parts
• KTM 125 SX / 150 SX Performance Parts

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 bikes. We pride ourselves on great customer service, and every item ships FAST - straight to your door.

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