FMF 041612 Factory RCT Full Exhaust System with MegaBomb Header - 4.1

The FMF Factory 4.1 RCT Full Exhaust System represents the pinnacle of motocross exhaust engineering, combining advanced technology with race-proven performance. This complete system features FMF's proprietary Resonance Chamber Technology (RCT) integrated both internally and externally to deliver maximum power gains across the entire RPM range while maintaining race-compliant sound levels.

Key Features:

• FMF Resonance Chamber Technology for enhanced power delivery throughout the RPM range
• MegaBomb stainless steel header design for improved low-end and mid-range power
• Factory Forward Engineering positions the muffler closer to the engine to centralize mass and improve handling
• Shorter overall length reduces susceptibility to crash damage
• Natural aluminum muffler construction with carbon fiber end cap
• Aerospace-grade materials manufactured to exacting specifications
• Includes spark arrestor screen insert and 94dB quiet insert
• 100% designed, tested, and manufactured in FMF's Southern California facility

The Factory 4.1 RCT system utilizes internal ducts within the resonance chambers to increase internal volume, improving exhaust flow and resulting in significant power gains. The natural aluminum finish with carbon fiber end cap provides a premium race-ready appearance while keeping weight to a minimum. This is a complete full system including both the MegaBomb header and RCT muffler.

Note: This exhaust system is designed for closed course competition use only and is not legal for sale or use in California on pollution-controlled motor vehicles.