FMF Factory 4.1 RCT Anodized Exhaust w/ MegaBomb - YFZ450R
- Ships next business day
- 30-day hassle-free returns
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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:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch
Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.
Questions? Contact us—we respond within 24 hours.
