Description
The FMF Racing Factory 4.1 RCT Titanium Anodized Slip-On exhaust with a carbon end cap showcases cutting-edge Resonance Chamber Technology™ and Factory Forward Engineering, optimising performance and durability for off-road racing. Designed with a shorter, crash-resistant profile and manufactured entirely from aerospace grade blue anodised titanium, this slip-on delivers substantial power gains across the RPM range while providing significant weight savings. The incorporated RTS Rapid Tuning System allows for convenient adjustments, ensuring adaptability to diverse racing conditions.
Features
- Notice: Closed course use only
- Blue anodised titanium muffler with carbon end cap
- Massive power gains throughout the RPM range
- Exceptionally lightweight construction
- New RTS (Rapid Tuning System) for quick, easy adjustments
- Premium aerospace-grade titanium construction
- FMF Resonance Chamber Technology™ (internal and external)
- Crash-resistant short profile for improved durability
- Includes spark arrestor screen insert and 94dB quiet insert
- Manufactured exclusively in Southern California
Specifications
- Item ID: 044455
- Type: Slip-On
- Configuration: Single
- Construction: Titanium
- Finish: Blue Anodised
- Midpipe: Titanium
- Endcap: Carbon
- Spark Arrestor: Screen insert (included)
- Carb Warning: No
- Quiet Insert: 94dB insert (included)
- Weight: 7.0 lbs
Vehicle Fitment
Yamaha
- WR250F (2023–2024)
- YZ250F (2019–2026)
- YZ250FX (2020–2026)


