FMF Factory Fatty Pipe 025157 — Beta 250 RR 300 RR 2013-2019

Product Description

The FMF Factory Fatty Pipe is inspired by the iconic "works" cone pipes once reserved for professional factory race teams. This pipe brings that same professional-grade craftsmanship and material quality to your Beta 250 RR or 300 RR, effectively broadening and smoothing out your power curve. By providing substantial gains across the entire RPM range—including stronger low-end, improved mid-range, and increased over-rev—the Fatty is the premier choice for riders seeking versatile performance in any riding environment.

Engineered for both performance and durability, this pipe uses lightweight 20-gauge steel for the main body to reduce mass, while the header section is reinforced with 19-gauge steel to better withstand the rigors of off-road and enduro racing. The precision hand-pounded seams ensure smooth, unrestricted exhaust flow, eliminating turbulence to maximize your Beta engine's power output.

Top Features: FMF Factory Fatty Pipe

• Race-proven design modeled after authentic factory "works" cone pipes
• Enhanced power delivery across the entire RPM range
• Lightweight 20-gauge steel body with 19-gauge steel header reinforcement
• Hand-pounded seams for optimized exhaust gas flow efficiency

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: Does this pipe offer more bottom-end power than the stock Beta pipe?
A: Yes, the Factory Fatty is specifically tuned to improve low-end grunt, which is highly beneficial for technical enduro riding, while also extending your mid-range and over-rev.

Q: Is this pipe compatible with the stock silencer?
A: The Factory Fatty is designed to work well with your stock silencer, but for the best results, many riders pair it with an FMF performance silencer to match the flow characteristics.

Expert Pro-Tip: Beta two-strokes are very sensitive to pipe fitment. When installing your new FMF pipe, ensure the mounting bolts are tightened evenly to avoid pre-loading the pipe, which can cause vibration-related cracks over time. A little anti-seize on the flange bolts also goes a long way for future maintenance.

Recommended Pairings:
o Beta 2-Stroke Performance Parts & Upgrades
o Beta 250 RR Performance Parts
o Beta 300 RR Performance Parts

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 bikes. Every order ships fast from our Central Florida location.

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