Features:
- The Factory 4.1 RCT incorporates FMF Resonance Chamber Technologyâ„¢ both internally and externally
 - Shorter overall length that is less susceptible to crash damage and complementary to FMF's Factory Forward Engineering - moving the muffler closer to the motor to centralize mass
 - The Factory 4.1 RCT is constructed from only aerospace grade materials that meet FMF's exacting specifications and is manufactured 100% at their Southern California factory
 - Massive Power gains throughout the RPM range.
 - Huge weight savings
 - New RTS (Rapid Tuning System)
 - Includes MegaBomb header
 - Includes spark arrestor screen insert
 
Specifications:
- Product Name: Exhaust System
 - Type: Full System
 - Model: Factory 4.1 RCT
 - Pipe Material: Titanium
 - Muffler Material: Titanium
 - Muffler Color/Finish: Anodized Blue
 - End Cap Material: Carbon Fiber
 - Units: Each
 - Riding Style: Off-Road
 
Fitment:
| Year | Make | Model | 
| 2020 | Yamaha | YZ 450 F | 
| 2021 | Yamaha | YZ 450 F | 
| 2022 | Yamaha | YZ 450 F | 
- Availability:
 - STG Part Number:
 - F|1506-044461|0
 - Manufacturer's Part Number: