FMF 041618 Factory 4.1 RCT Slip-On Exhaust Stainless Aluminum Carbon End Cap

The FMF Factory 4.1 RCT Slip-On Exhaust combines championship-proven performance with cutting-edge engineering for dirt bike and off-road enthusiasts. This high-performance slip-on muffler features FMF's proprietary Resonance Chamber Technology (RCT), which utilizes a patent-pending core shape that enhances exhaust pressure waves for optimal power output across the entire RPM range while simultaneously reducing sound levels.

Key Features:

• Natural aluminum canister construction with stainless steel mid-pipe and carbon fiber end cap
• RCT technology delivers power gains throughout the RPM range while meeting sound requirements
• Shorter overall length reduces susceptibility to crash damage
• Factory Forward Engineering design centralizes mass by positioning muffler closer to motor
• Rapid Tuning System (RTS) with snap ring feature allows quick insert changes
• Aerospace-grade materials manufactured 100% in FMF's Southern California facility
• Includes 94dB quiet insert and spark arrestor screen insert
• Compatible with FMF or OEM headers
• Significant weight savings over stock exhaust

The redesigned canister increases internal capacity for maximum packing material volume, while FMF's proprietary packing blend ensures superior durability and sound attenuation. The engineered rear end cap features the RTS system, making tuning adjustments simple and secure. Trusted by professional racing teams and proven in AMA Supercross, AMA Motocross, and FIM Motocross of Nations competition.

Note: For closed course competition use only. Not intended for street use.