
FMF Racing Factory 4.1 RCT Slip-On Muffler for 2020 Yamaha WR450F - 044464
FMF Factory 4.1 RCT Slip-On Muffler
- FMF uses the highest quality proprietary blend of alloy grade titanium made especially to our standards
- Natural Aluminum Muffler with Carbon End Cap
- Massive Power gains throughout the RPM range.
- Huge weight savings
- New RTS (Rapid Tuning System)
- Made in the USA
The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our 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 our exacting specifications and is manufactured 100% at our Southern California factory.
| Product Line | FMF Factory 4.1 RCT Slip-On Muffler |
| Part Number | 044464 |
| Fitment Type | Model-Specific Fitment |
| Use Type | |
| Unit Sale Qty | |
| Style | |
| Size | |
| Position | |
| Material | Aluminum |
| Color | |
| Finish | Natural |
| Exhaust Configuration | Single Muffler Slip-On Exhaust |
| Muffler Size | |
| Muffler End/Tip Style | Carbon Fiber End Cap |
| California Emissions | FALSE |
| Product Disclaimer | |
| Fitment Note | |
| Fitment Note | |
| Fitment Note | |
| Fitment Note | |
| Fitment Note |
2020 Yamaha WR450F
Original: $421.00
-65%$421.00
$147.35Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
FMF Factory 4.1 RCT Slip-On Muffler
- FMF uses the highest quality proprietary blend of alloy grade titanium made especially to our standards
- Natural Aluminum Muffler with Carbon End Cap
- Massive Power gains throughout the RPM range.
- Huge weight savings
- New RTS (Rapid Tuning System)
- Made in the USA
The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our 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 our exacting specifications and is manufactured 100% at our Southern California factory.
| Product Line | FMF Factory 4.1 RCT Slip-On Muffler |
| Part Number | 044464 |
| Fitment Type | Model-Specific Fitment |
| Use Type | |
| Unit Sale Qty | |
| Style | |
| Size | |
| Position | |
| Material | Aluminum |
| Color | |
| Finish | Natural |
| Exhaust Configuration | Single Muffler Slip-On Exhaust |
| Muffler Size | |
| Muffler End/Tip Style | Carbon Fiber End Cap |
| California Emissions | FALSE |
| Product Disclaimer | |
| Fitment Note | |
| Fitment Note | |
| Fitment Note | |
| Fitment Note | |
| Fitment Note |
2020 Yamaha WR450F
















