FMF 042394 Factory 4.1 RCT Slip-On Exhaust Aluminum Muffler Carbon End Cap

The FMF Factory 4.1 RCT Slip-On delivers professional-level exhaust performance with the latest Resonance Chamber Technology for four-stroke dirt bikes. This aluminum muffler features a stainless steel midpipe and carbon fiber end cap, combining lightweight construction with race-proven durability.

Key Features:

• Resonance Chamber Technology (RCT) enhances exhaust pressure wave for power gains throughout the RPM range while reducing sound levels
• Natural finish aluminum canister construction with stainless steel midpipe for optimal strength-to-weight ratio
• Carbon fiber end cap with integrated Rapid Tuning System (RTS) for easy insert changes
• Shorter overall length centralizes mass and reduces crash damage susceptibility
• Patent-pending core design optimizes exhaust flow and lowers decibel output
• Redesigned canister maximizes internal packing capacity for improved sound attenuation
• Proprietary packing material blend for superior durability and sound control
• Aerospace-grade materials manufactured 100% in FMF's Southern California facility

Included Components:

• 94dB quiet core insert for trail and race compliance with AMA and FIM sound requirements
• U.S. Forestry Service approved spark arrestor screen insert
• Snap ring retention system for secure insert installation

This slip-on exhaust is compatible with both stock headers and FMF performance headers. The RTS endcap design allows quick swapping between the included quiet insert and optional race tips (sold separately). Designed for closed course competition use only.