Factory 4.1 RCT Exhaust System

Get more usable power and a lighter, more race-focused exhaust setup with the FMF Factory 4.1 RCT Full Exhaust System. Designed with FMF Resonance Chamber Technology™ both internally and externally, this system delivers massive power gains throughout the RPM range while also providing huge weight savings compared to stock components.

Its shorter overall length helps reduce the chance of crash damage and supports FMF’s Factory Forward Engineering by moving the muffler closer to the motor to centralize mass—a real advantage for handling feel, quick direction changes and riding confidence on track or trail.

Key features:

• ✅ FMF Resonance Chamber Technology™ (internal & external) for optimized performance
• ✅ Short, forward-position design to improve mass centralization and durability in crashes
• ✅ New RTS (Rapid Tuning System) for quicker, easier tuning changes

Benefits of use:

• 🔹 Stronger performance across the rev range for faster acceleration and better drive
• 🔹 Noticeable weight reduction for improved bike agility and less rider fatigue
• 🔹 Built from high-end materials and manufactured to strict FMF specs for long-term reliability

Technical specifications (highlights):

• 📌 Type: Full exhaust system
• 📌 Includes: MegaBomb header, spark arrestor screen insert, 94dB insert
• 📌 Materials: Stainless steel pipe, aluminum muffler, carbon fiber end cap

Why choose this exhaust system?
⭐ Aerospace-grade materials and 100% manufactured at FMF’s Southern California factory
⭐ Performance-focused design with proven FMF technology for real riding gains
⭐ Complete kit (header + muffler) for a true full-system upgrade

Note: Will not pass 2025 FIM sound regulation.