From a SoCal Garage to the Podium: The History of FMF Racing
50 Years of Flying Machine Factory: The FMF Legacy Story
From a Southern California garage to the top of the podium, FMF—the Flying Machine Factory—has defined dirt bike and ATV performance for five decades. It all started in 1973 with Donny "Uncle Donnie" Emler, who built custom exhaust systems that gave riders a competitive edge. The brand exploded after pro rider Marty Smith won on an FMF-equipped Honda Elsinore, solidifying FMF's reputation for high-performance, hand-crafted exhausts.
Today, FMF remains a family-owned business deeply committed to the sport. While the technology has evolved, their core values of innovation and performance haven't changed. FMF's exhaust systems are now the industry standard for performance upgrades on all major dirt bikes and ATVs, trusted by champions and enthusiasts alike. When you hear that signature FMF sound, you're hearing the legacy of a company that has been pushing the boundaries of performance for 50 years.
When it comes to maximizing your dirt bike’s performance, the exhaust system is everything—and FMF stands alone at the pinnacle of excellence for both two-stroke and four-stroke riders. With precision engineering, premium materials, and decades of proven racing dominance, FMF pipes aren’t just upgrades—they’re the ultimate game-changers. If you want top-tier horsepower, a flawlessly smooth powerband, and that unmistakable FMF roar, these exhausts deliver unrivaled results that serious riders demand—whether on the track or the trail.
FMF Factory Fatty: Proven Power for Every Ride
The FMF Factory Fatty is the perfect choice when you want to unlock more power and a smoother ride. Designed to increase horsepower output throughout the powerband, the Factory Fatty delivers stronger low-end and mid-range pull while also improving over-rev. No matter your riding style—track, trail, or anywhere in between—you’ll notice a more responsive and versatile performance.
FMF Factory Fatty Exhaust Pipe – Features:
- Based on the proven design used by pro riders
- Cone section shaped like the original Fatty, now with updated features
- Constructed with two thicknesses of steel for optimal strength-to-weight balance
- 19-gauge steel in the header section for durability; 20-gauge steel in the body and rear for weight savings
- Hand-pounded seams for that true factory look
- Comes in a raw, unplated, oiled finish—must be oiled after washing for long-lasting performance
FMF Ti Factory 4.1 RCT Full System: Precision Performance
The FMF Ti Factory 4.1 RCT Full System is designed to deliver top-tier motocross and off-road performance. This system features FMF’s innovative Resonance Chamber Technology combined with a Megabomb Head Pipe to provide enhanced power, improved durability, and refined sound control.
Key Features:
- Resonance Chamber Technology: Integrated internally and externally to maximize power delivery and engine efficiency
- Patented Core Shape: Reduces sound levels without sacrificing horsepower, balancing power and noise
- Patented Canister Shape: Increased internal volume for better sound absorption and control
- Enhanced Exhaust Pressure: Unique chamber design optimizes engine performance through refined exhaust pressure
- Factory Forward Engineering: Shorter length centralizes mass, reducing crash damage risk—perfect for aggressive riding
- Optimized Core Specifications: Tuned specifically for each application to ensure maximum efficiency
- Easy Installation: Rear endcap designed for quick add-ons like tuning tips or spark arrestors
- Megabomb Head Pipe: Boosts horsepower by up to 3hp while lowering noise by up to 1.5dB, enhancing engine output without loudness
For riders serious about gaining horsepower, optimizing performance, and ensuring durability in tough racing conditions, the FMF Ti Factory 4.1 RCT Full System is a must-have upgrade that delivers all this while maintaining that signature FMF quality.
FMF PowerCore 2.1 Silencer: Two-Stroke Performance Perfected
The FMF PowerCore 2.1 silencer is a testament to FMF’s dedication to advancing two-stroke performance. Engineered for riders who demand more speed and consistency, it delivers a smooth power curve across the entire RPM range. Whether you’re pushing for podiums or carving up your favorite trails, the PowerCore 2.1 offers lighter weight, better tunability, and longer-lasting packing life than stock.
FMF PowerCore 2.1 Silencer – Features:
- Race-tested, smooth power curve from low to high RPMs
- Designed for peak performance on today’s tracks and trails
- Larger-diameter titanium canister for improved tunability and extended packing life
- Significantly lighter than stock silencers
- Perfectly complements FMF pipes, but also fits stock exhaust systems
For riders who demand the best in performance, durability, and innovation, FMF pipes and silencers continue to set the standard. Whether you’re on a two-stroke or four-stroke machine, upgrading to FMF means tapping into decades of racing expertise and cutting-edge engineering designed to elevate your ride. From the Factory Fatty to the PowerCore 2.1 silencer, these products deliver power, reliability, and that unmistakable FMF sound that every rider loves. Ready to take your dirt bike’s performance to the next level? FMF has got you covered.