Features:
- The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technologyâ„¢ both internally and externally
 - In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their 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 their exacting specifications and is manufactured 100% at their Southern California factory
 - Massive Power gains throughout the RPM range.
 - Huge weight savings
 - RTS (Rapid Tuning System)
 
Specifications:
- Product Name: Muffler
 - Type: Slip-On
 - Model: Factory 4.1 RCT
 - Pipe Material: Stainless Steel
 - Muffler Material: Aluminum
 - Muffler Color/Finish: Raw
 - End Cap Material: Carbon Fiber
 - Units: Each
 - Riding Style: Off-Road / Adventure Touring / Dual-Sport
 
Fitment:
| Year | Make | Model | 
| 2014 | Yamaha | YZ 250 F | 
| 2015 | Yamaha | YZ 250 F | 
| 2016 | Yamaha | YZ 250 F | 
| 2017 | Yamaha | YZ 250 F | 
| 2018 | Yamaha | YZ 250 F | 
- Availability:
 - STG Part Number:
 - F|1506-044427|1
 - Manufacturer's Part Number: