Unlock stronger power and a lighter, race-focused setup with the FMF Factory 4.1 RCT Exhaust System. Built from aerospace-grade materials and manufactured in FMF’s Southern California facility, this full system is designed for riders who want maximum performance throughout the RPM range without unnecessary weight.
Thanks to FMF Resonance Chamber Technology (RCT™) and a shorter overall length, the muffler sits closer to the engine (Factory Forward Engineering) to help centralize mass and reduce how exposed the system is in a crash. The included MegaBomb header further supports improved power delivery, while the RTS (Rapid Tuning System) makes fine-tuning easier.
Key features:
✅ FMF Resonance Chamber Technology™ (internal and external design)
✅ Shorter length for improved mass centralization and reduced crash vulnerability
✅ Aerospace-grade titanium construction with carbon-fiber end cap
✅ Massive power gains across the RPM range
✅ Huge weight savings vs. stock systems
✅ RTS (Rapid Tuning System)
✅ Includes MegaBomb header
✅ Includes spark arrestor screen insert
✅ Note: will not pass 2025 FIM sound regulation
Benefits of use:
🔹 Faster, stronger throttle response and improved pull across the rev range
🔹 Lighter exhaust setup to enhance handling and reduce rider fatigue
🔹 More compact layout helps protect the system during off-road riding and racing
Technical specifications:
📌 Type: Full exhaust system
📌 Material: Titanium (pipe and muffler)
📌 End cap material: Carbon fiber
📌 Muffler finish/color: Anodized blue
📌 Brand/Model: FMF Factory 4.1 RCT
📌 Vendor part number: 044461
Why choose this product/service?!
⭐ Premium FMF build quality with race-proven design and materials
⭐ Designed for serious performance gains and significant weight reduction
⭐ Complete package with MegaBomb header and spark arrestor insert included
