FMF Factory Fatty Pipe 024073 — Yamaha YZ85 2019-2026

FMF Factory Fatty Pipe 024073 — Yamaha YZ85 2019-2026

Product Description

The FMF Factory Fatty Pipe is the ultimate choice for riders looking to replicate the legendary "works" or cone pipe look and feel used by professional factory teams. Designed with precision craftsmanship and premium material quality, this pipe is engineered to deliver elite-level performance for your machine.

By optimizing exhaust scavenging, the Factory Fatty broadens and smooths out the power curve, providing significant, usable gains throughout the entire RPM range. Whether you are looking for improved low-end grunt for corner exits, a stronger mid-range pull, or increased over-rev for long straights, this pipe is built to deliver the power exactly where you need it most.

Top Features: FMF Factory Fatty Pipe

• Constructed from lighter 20-gauge steel for the body to reduce overall weight
• 19-gauge steel used for the header portion to ensure maximum durability under stress
• Features hand-pounded seams to promote smooth, uninterrupted exhaust flow transitions
• Boosts performance across the low, mid, and top-end power band
• "Works" style finish for a factory racing aesthetic

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

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Sub-Model
2019-2026	Yamaha	YZ85

Frequently Asked Questions

Q: Do I need to re-jet my carburetor after installing this FMF pipe?
A: Yes. Whenever you install a high-performance exhaust system that increases airflow, you should adjust your jetting to match the new power characteristics and prevent a lean condition.

Q: Is this pipe compatible with the stock silencer?
A: While it may fit, the Factory Fatty is designed to work best as a complete system with FMF silencers. We recommend pairing it with an FMF PowerCore 2 or Shorty silencer for peak performance.

Expert Pro-Tip: When installing your new FMF pipe, always use a fresh exhaust O-ring and a high-temp silicone sealant at the flange. A leaky connection kills the pressure wave your 2-stroke needs to build power, and it will quickly ruin your new pipe's finish by spraying unburnt premix oil all over the header.

Recommended Pairings:
o Yamaha YZ85 Performance Parts & Upgrades
o Yamaha 2-Stroke Performance Parts
o Essential Maintenance & Motorcycle Tools

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