FMF Factory 4.1 RCT Anodized Exhaust w/ MegaBomb - YFZ450R
- Ships next business day
- 30-day hassle-free returns
- Call us: 541-668-7503
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California buyers: Not legal for use in California on pollution controlled vehicles. Racing use only in California, waiver available.
✓ Fits
2009-2022 Yamaha YFZ450R, all editions. This is the complete FMF Factory 4.1 RCT system with MegaBomb header, the full front-to-back exhaust for the machine that dominates the dunes and the track.
✓ Features
- Massive power gains throughout the entire RPM range
- Huge weight savings over the stock system
- FMF Resonance Chamber Technology (RCT) applied both internally and externally
- Shorter overall muffler length is less susceptible to crash damage, and FMF's Factory Forward Engineering moves the muffler closer to the motor to centralize mass for sharper handling
- New RTS Rapid Tuning System
- Anodized titanium construction from FMF's highest quality proprietary blend of alloy grade titanium, made to their exacting aerospace specifications
- MegaBomb header smooths the power hit and quiets exhaust note while adding midrange
- Manufactured 100% at FMF's Southern California factory
✓ What's Included
- FMF Factory 4.1 RCT anodized titanium muffler
- MegaBomb header
- Complete system mounting hardware (FMF part 044438)
Pair it with our Hot Cams Stage 1, 2, or 3 cam kits and let the YFZ breathe on both ends.
All warranties on installed FMF products are handled directly by FMF: sales@fmfracing.com or 310-631-4363.
Ships fast from DuneGoonShop!
📦 Shipping Information
In-stock items ship next business day. ModQuad parts dispatch Monday through Thursday.
Made-to-order and custom powder coat items show their lead time at the top of this page, right next to the truck icon. These are built fresh for you, so timing varies by brand and current backlog.
Need something by a specific date? Call us at 541-668-7503 before ordering and we will check stock and ETA on that exact part. We can often point you to an in-stock alternative from another distributor.
Questions? Contact us, we respond within 24 hours.
