The PROX 28.4424-2 Titanium Intake Valve is designed for reliable replacement performance in select Kawasaki 450cc motocross and off-road engines. Manufactured to OEM specifications, this intake valve supports proper valve-train operation and helps restore dependable engine performance during maintenance or rebuild work. Its titanium construction provides a lightweight solution suited to the high-rpm demands of modern performance engines.
This PROX intake valve fits 2024–2026 Kawasaki KX450F, KX450SR and KX450X models. It is intended for the intake side of the cylinder head and should be installed according to the applicable Kawasaki service procedures, including inspection of valve clearance, valve-seat condition and related components. Confirm model-year compatibility and compare the original valve before installation.
Each valve is sold individually. The PROX manufacturer part number and vendor part number are both 28.4424-2, providing a direct reference when ordering replacement components for the listed Kawasaki applications. This valve is a practical choice for engine service, top-end refreshes and replacement of worn or damaged OEM-specification intake valves.
Features:
- Construction: Titanium intake valve designed for high-performance Kawasaki engines
- Manufacturing: Produced by PROX to OEM specifications
- Fitment: Fits 2024–2026 Kawasaki KX450F, KX450SR and KX450X models
- Application: Replacement intake valve for engine maintenance and top-end rebuilding
- Packaging: Sold individually
- Identification: PROX manufacturer and vendor part number 28.4424-2
Fitment:
2024 Kawasaki KX450F
2024 Kawasaki KX450SR
2024 Kawasaki KX450X
2025 Kawasaki KX450F
2025 Kawasaki KX450SR
2025 Kawasaki KX450X
2026 Kawasaki KX450F
2026 Kawasaki KX450SR
2026 Kawasaki KX450X