FMF Factory 4.1 RCT Slip-On Exhaust System 045586

Powerful, lightweight, and precision-built, the Factory 4.1 RCT Slip-On delivers enhanced engine efficiency with a race-ready edge. The blue anodized titanium muffler—paired with a carbon end cap—houses FMF Resonance Chamber Technology to improve exhaust flow and tonality while reducing weight versus stock. Its shorter overall length reduces crash vulnerability and centralizes mass toward the engine for sharper handling.

• Blue anodized titanium muffler with carbon end cap
• Aerospace-grade titanium construction for durability under hard riding
• Manufactured 100% in FMF’s Southern California factory
• Rapid Tuning System (RTS) for on-bike tuning adjustments
• Shorter length to minimize crash damage and better mass centralization
• Easy installation with compatible FMF mounting points
• Slip-on configuration designed for 250-501cc four-stroke dirt bikes (KTM/Husqvarna), commonly used on 2015–2019 models

Built to deliver power gains across the entire RPM range and a crisp, aggressive exhaust note, this 045586 model is engineered to endure high temperatures and rugged riding conditions while presenting a professional, race-leaning aesthetic.

The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our Factory Forward Engineering - moving the muffler closer to the motor to centralize mass. The Factory 4.1 RCT is constructed from only aerospace grade materials that meet our exacting specifications and is manufactured 100% at our Southern California factory.

-Available in Blue Anodized Titanium Muffler with Carbon End Cap 

-Massive Power gains throughout the RPM range.

-Huge weight savings

-New RTS (Rapid Tuning System)

-FMF uses the highest quality proprietary blend of alloy grade titanium made specifically to our standards.

Upgrade your motorcycle's performance with the FMF Racing Factory 4.1 RCT exhaust system. Designed for durability and power, this system enhances engine efficiency and sound quality for a superior riding experience. Crafted with precision, the Factory 4.1 RCT features advanced materials to withstand high temperatures and rigorous riding conditions. The sleek design not only improves exhaust flow but also adds a professional look to your bike, making it suitable for both competitive racing and recreational riding.
Installation is straightforward with the compatible mounting points, ensuring a secure fit. The FMF Racing Factory 4.1 RCT is engineered to deliver consistent performance, whether you're pushing limits on the track or enjoying a weekend ride. Its lightweight construction helps reduce overall bike weight, contributing to better handling and acceleration. Invest in this high-quality exhaust system to unlock your motorcycle's full potential and enjoy a more responsive, powerful ride.

Features:

• Durable construction designed to withstand high temperatures

• Enhanced exhaust flow for increased power and performance

• Sleek and professional appearance with a high-quality finish

• Lightweight design to improve handling and acceleration

• Easy installation with compatible mounting points