FMF Factory 4.1 RCT Slip-On Exhaust with Titanium MegaBomb for Kawasaki KX450F and KX450X, Part 042403

The FMF Factory 4.1 RCT slip-on exhaust is engineered for riders seeking improved exhaust flow, refined sound control, and strong power delivery on compatible Kawasaki motocross and cross-country models. This stainless steel and aluminum exhaust system incorporates FMF Resonance Chamber Technology and a titanium MegaBomb header to help optimize power output across the application-specific RPM range. Manufacturer part number 042403 and vendor part number 79-042403 identify this system.

The patented core shape helps reduce sound levels while maintaining maximum power output, while the patented canister shape increases internal volume for additional sound-absorbing material. A patented chamber design refines exhaust pressure for responsive performance. Factory Forward Engineering centralizes mass and helps reduce exposure to crash damage, making the system well suited to demanding off-road use. Each exhaust is tuned with optimized core specifications for its intended motorcycle application.

The innovative rear end cap allows straightforward installation of tuning tip inserts or a spark arrestor, supporting flexible setup options for track and trail riding. The included titanium MegaBomb is designed to complement the exhaust and help maximize the performance potential of the motorcycle. Installation is intended for riders who want a high-performance FMF exhaust solution with application-specific fitment and practical tuning flexibility.

Fitment includes the 2024, 2025, and 2026 Kawasaki KX450F and Kawasaki KX450X. Verify the motorcycle model and year before ordering to ensure proper compatibility.

Features:

• Resonance Chamber Technology: Incorporates FMF's latest technology to support controlled sound and efficient exhaust performance.
• Patented Core Shape: Lowers sound levels while maintaining maximum power output.
• Patented Canister Shape: Increases internal volume for more sound-absorbing material.
• Patented Chamber Design: Enhances and refines exhaust pressure for responsive power delivery.
• Factory Forward Engineering: Centralizes mass and helps reduce susceptibility to crash damage.
• Application-Specific Tuning: Uses optimized core specifications for each compatible motorcycle.
• Innovative Rear End Cap: Simplifies installation of tuning tip inserts or a spark arrestor.
• Titanium MegaBomb Included: Helps optimize power output for the intended application.
• Fitment: Fits 2024, 2025, and 2026 Kawasaki KX450F and KX450X models.
• Identification: FMF manufacturer and brand; manufacturer part number 042403; vendor part number 79-042403.