FMF Racing - FMF042406 - Factory 4.1 RCT Complete Exhaust System

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.

• Highest-quality proprietary blend of alloy grade titanium
• Blue anodized titanium muffler with carbon end cap
• Massive power gains throughout the RPM range
• Rapid Tuning System (RTS)

The FMF Racing Factory 4.1 RCT complete exhaust system incorporates FMF Resonance Chamber Technology™ internally and externally to deliver substantial power gains throughout the RPM range. Its shorter overall length helps reduce susceptibility to crash damage, while Factory Forward Engineering positions the muffler closer to the engine to help centralize mass.

Key Features & Performance Benefits

• FMF Resonance Chamber Technology™: Integrated internally and externally for enhanced exhaust performance.
• Shorter Overall Length: Designed to be less susceptible to crash damage.
• Factory Forward Engineering: Moves the muffler closer to the engine to help centralize mass.
• Rapid Tuning System: Includes FMF’s Rapid Tuning System (RTS).

Key Product Specifications & Technical Data

• Brand: FMF Racing
• Part Number: FMF042406
• Product: Factory 4.1 RCT complete exhaust system
• Part Type: Powersports
• Construction: Aerospace-grade materials
• Muffler Material: Proprietary alloy-grade titanium
• Muffler Finish: Blue anodized titanium
• End Cap: Carbon

What’s Included

This product is described as a complete system with a titanium header and carbon end cap. Fitment: 2024–2026 Kawasaki KX450X.

Fitments:
2024 Kawasaki KX450X Base
2025 Kawasaki KX450X Base
2026 Kawasaki KX450X Base

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: powersports
Epa: Compliant
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1