FMF

FMF Factory 4.1 RCT Slip-On Muffler delivers massive power gains across the RPM range with huge weight savings in a compact, crash-resistant design. Built from aerospace-grade titanium with a carbon-fiber end cap and FMF RCT Resonance Chamber Technology.

• RCT technology (internal & external) for tuned performance
• Shorter, centralized mass design helps reduce crash damage
• Titanium + carbon fiber with RTS (Rapid Tuning System)

FMF Factory 4.1 RCT slip-on muffler engineered for big power gains across the RPM range with major weight savings. Compact “Factory Forward” layout helps reduce crash exposure by moving mass closer to the engine.

• RCT Resonance Chamber Technology (internal & external)
• Aerospace-grade materials: aluminum/stainless with carbon-fiber end cap
• RTS Rapid Tuning System for fast performance tuning

The FMF Factory 4.1 RCT slip-on muffler delivers massive power gains across the RPM range with huge weight savings. Built from aerospace-grade titanium with a carbon fiber end cap, it’s designed shorter and tucked closer to the engine to help reduce crash damage and centralize mass.

• Resonance Chamber Technology™ (internal & external) for improved performance
• Rapid Tuning System (RTS) for quick adjustments
• Titanium body/pipe with anodized blue finish and carbon fiber end cap

The FMF Factory 4.1 RCT Slip-On Muffler is built to deliver massive power gains across the RPM range while cutting weight. Its compact design helps reduce crash damage and moves mass closer to the engine for improved handling.

• Resonance Chamber Technology™ (RCT) internal & external for optimized performance
• RTS (Rapid Tuning System) for quick, easy tuning
• Aerospace-grade construction: aluminum canister, carbon fiber end cap, stainless steel pipe

The FMF Factory 4.1 RCT Slip-On Muffler is a premium performance upgrade built for stronger power delivery across the RPM range with major weight savings. Its shorter design helps reduce crash damage while moving mass closer to the engine for improved handling.

• ✅ Titanium muffler/pipe with carbon-fiber end cap
• ✅ Resonance Chamber Technology™ (RCT) for broad power gains
• ✅ Rapid Tuning System (RTS) and shorter, more protected layout

The FMF Factory 4.1 RCT Slip-On Muffler is built to deliver strong, usable power while keeping sound under control. RCT (Resonance Chamber Technology) reduces decibels without sacrificing performance, and the Factory Forward design helps protect the muffler in crashes.

• ✅ RCT core design for lower dB with maximum power output
• ✅ QuietCore 94dB insert included + spark arrestor included
• ✅ Meets AMA & FIM sound requirements