FMF 045638 Factory 4.1 RCT Full Exhaust System Aluminum Muffler Carbon End Cap

The FMF Factory 4.1 RCT Full Exhaust System combines advanced engineering with premium materials to deliver exceptional performance for your dirt bike. This complete system features FMF's proprietary Resonance Chamber Technology (RCT) integrated both internally and externally for optimized exhaust flow and power delivery.

Key Features:

• Stainless steel MegaBomb header design for massive power gains throughout the RPM range
• Natural aluminum muffler canister with carbon fiber end cap
• Shorter overall length reduces crash damage susceptibility and centralizes mass closer to the motor
• Constructed from aerospace grade materials to FMF's exacting specifications
• RTS (Rapid Tuning System) allows easy sound insert changes
• Includes 94dB quiet insert and screen-type spark arrestor for versatility
• Weighs only 13.3 lbs for significant weight savings over stock
• 100% manufactured in FMF's Southern California factory

This system delivers improved low-end, mid-range, and over-rev power while maintaining a quieter sound level than stock. The complete kit includes the stainless steel MegaBomb header, aluminum muffler, carbon end cap, spark arrestor, and quiet insert. Designed for closed course competition use.