FMF Factory 4.1 RCT Slip-On Muffler Blue Endcap

Elevate your motorcycle's performance with the FMF Factory 4.1 RCT Slip-On Muffler, engineered to deliver significant power gains and a refined exhaust note. This premium FMF exhaust system integrates advanced technology for riders seeking a competitive edge on the track or trail.

Description

The FMF Factory 4.1 RCT Slip-On Muffler is a state-of-the-art motorcycle exhaust component designed for serious riders. At its core is FMF's patented Resonance Chamber Technology (RCT), which utilizes a unique internal core shape and innovative internal ducts. This design not only lowers decibel levels to meet AMA and FIM sound requirements (pre-2025) but also significantly increases internal volume for improved exhaust flow, translating into impressive power gains across the entire RPM range. The Factory Forward Engineering concept centralizes mass for better handling and makes the muffler less susceptible to crash damage, a crucial benefit in demanding off-road conditions.

Installation is straightforward, compatible with either your stock header or an FMF header, offering versatile upgrade options. The innovative rear end cap simplifies the process of installing tuning tip inserts or the included spark arrestor, requiring the removal of just four screws. This FMF Factory 4.1 RCT Slip-On Muffler comes with a distinctive blue anodized finish and a carbon fiber endcap, ensuring both top-tier performance and a factory look. A QuietCore 94 dB insert is also included, providing flexibility for various riding environments and sound regulations.

Features & Highlights

• Patented Resonance Chamber Technology (RCT): Experience optimized power output and a lower decibel level thanks to a uniquely shaped core and internal ducts that enhance exhaust flow.
• Enhanced Power Delivery: Internal chamber ducts boost internal volume, leading to improved exhaust scavenging and noticeable power gains throughout the engine's entire powerband.
• Factory Forward Engineering: Benefit from centralized mass for superior handling dynamics and a more robust design that reduces vulnerability to crash damage.
• Versatile End Cap Design: The innovative rear end cap allows for quick and easy installation of tuning tip inserts or the included spark arrestor with minimal tools.
• Sound Compliance & Inclusions: Meets current AMA and FIM sound requirements, featuring a QuietCore 94 dB insert and a spark arrestor pre-installed for immediate use.
• Premium Finish: This specific model boasts a striking blue anodized finish complemented by a durable carbon fiber end cap for a factory race aesthetic.

Technical Specifications

• Muffler Type: Slip-On
• Technology: Resonance Chamber Technology (RCT)
• End Cap Material: Carbon Fiber
• End Cap Finish: Blue Anodized
• Sound Insert: QuietCore 94 dB (Included)
• Spark Arrestor: Included

Important to Know

• Requires an existing header (compatible with stock or FMF headers).
• This product will not pass the 2025 FIM sound regulation.