FMF Aluminum Factory 4.1 RCT (Slip-On) Carbon Fiber End Cap - 044427 - 2014-2018 Yamaha YZ250F

✨FMF 044427 Factory 4.1 RCT Slip-On Muffler – Maximum Power for Your Yamaha!

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Upgrade your ride with the FMF 044427 Factory 4.1 RCT Slip-On Muffler, engineered for peak performance on your 2014-2018 Yamaha YZ250F, 2015-2019 Yamaha YZ250FX, and 2015-2019 Yamaha WR250F. Featuring FMF’s patented Resonance Chamber Technology™ (RCT), this exhaust system boosts power, improves throttle response, and reduces weight—all while meeting strict race sound regulations. Whether you’re on the track or hitting the trails, this is the ultimate performance upgrade.

Why Choose the FMF Factory 4.1 RCT?

✔ Resonance Chamber Technology™ – More power, less noise, better efficiency.
✔ Factory Forward Engineering – Compact design moves weight closer to the engine for improved handling.
✔ Aluminum Construction + Carbon Fiber End Cap – Ultra-lightweight, race-proven durability.
✔ Patented Internal Ducting – Optimized exhaust flow for power gains across the RPM range.
✔ Quick & Easy Tuning – Rear end cap allows easy installation of tuning tip inserts or spark arrestor.
✔ Meets AMA & FIM Sound Standards – Includes 94dB Quiet Core insert and spark arrestor.
✔ Compatible with Stock or FMF Headers – A perfect fit for your setup.

Ride Lighter, Faster, and More Powerful!

The FMF 044427 Factory 4.1 RCT Slip-On Muffler is built to help you dominate the track and trails with your YZ250F, YZ250FX, or WR250F. Don't settle for stock—order now and feel the FMF difference!

❇️ Limited Stock – Buy Now Before It’s Gone!

FAQs:

❓ Will this fit a 2020+ Yamaha YZ250F or WR250F?
No, this model is specifically designed for 2014-2018 YZ250F, 2015-2019 YZ250FX, and 2015-2019 WR250F.

❓ Does it include a spark arrestor?
Yes! A spark arrestor and 94dB Quiet Core insert are included for noise reduction and trail compliance.

Yamaha YZ250F, YZ250FX Performance Parts and Accessories

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