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FMF Racing Factory 4.1 RCT Slip-On Exhaust – Unmatched Power and Lightweight Performance

The FMF Racing Factory 4.1 RCT Slip-On Exhaust is the pinnacle of 2-stroke performance, utilizing the latest FMF Resonance Chamber Technology™ (RCT) for massive power gains throughout the entire RPM range. This advanced system is engineered to maximize performance while minimizing weight, featuring a Natural Aluminum Muffler paired with a carbon end cap. With a shorter overall length, the exhaust is more crash-resistant, while Factory Forward Engineering moves the muffler closer to the motor to centralize mass, improving balance and handling.

Built using aerospace-grade materials, including a stainless steel midpipe and carbon endcap, the Factory 4.1 RCT delivers huge weight savings and long-lasting durability. FMF’s Rapid Tuning System (RTS) allows for easy adjustments, ensuring your exhaust performs at its peak with every ride. Manufactured 100% at FMF’s Southern California facility, this exhaust system is crafted to meet the highest quality standards.

Key Features:

• Massive power gains – Delivers exceptional performance across the RPM range for faster acceleration and better throttle response
• Huge weight savings – Lightweight construction for improved handling and bike balance
• FMF Resonance Chamber Technology™ (RCT) – Optimized internal and external design for smoother power delivery
• Factory Forward Engineering – Moves the muffler closer to the motor to centralize mass and improve handling
• Rapid Tuning System (RTS) – Quickly adjust the exhaust for peak performance
• Aerospace-grade materials – Titanium and stainless steel for superior strength and durability
• Natural aluminum muffler with carbon end cap – Premium finish and factory-like look
• Spark Arrestor Screen Insert (included) – U.S. Forestry-approved for trail riding
• 94dB Quiet Insert (included) – Noise reduction for legal trail use

Item Details:

• Item ID: 045647
• Type: Slip-On
• Configuration: Single
• Construction: Aluminum
• Finish: Natural
• Midpipe: Stainless Steel
• Endcap: Carbon
• Spark Arrestor: Screen Insert (included)
• Quiet Insert: 94dB Insert (included)
• Weight: 5.9 lbs
• Carb Warning: No