Vertex Valve Titan KX250F 04-05

Vertex Valve Titan KX250F 04-05

The Vertex Valve Titan KX250F 04-05 is a titanium intake valve for Kawasaki KX250F 2004–2008 and Suzuki RM-Z250 2004–2006 engines, providing an OEM-style replacement for worn or damaged intake hardware. This forged one-piece valve maintains correct flow and sealing in high-rpm 250F motocross applications.

Technical specifications

• Application: Intake valve for Kawasaki KX250F 2004–2008 and Suzuki RM-Z250 2004–2006
• Part number: 8400011-2
• Material: Titanium, forged one-piece construction
• Overall length: 79 mm
• Valve head outer diameter: 32 mm
• Seat angle: 45°
• Coating: Nitride or chromium nitride surface coating (application-specific, OEM-style performance)
• Stem tip: Induction hardened
• Machining: Precision machined valve head and seat surfaces with precision polished finish
• Compatibility: Direct-fit OEM replacement, compatible with OEM keepers and retainers

Use and service context

Use this Vertex titanium intake valve when restoring top-end performance, addressing hard starting, loss of compression, or poor sealing due to worn OEM intake valves. It is typically installed together with new valve springs, stem seals, and often during a piston and timing chain service on high-hours engines.

Installation notes

This intake valve installs as a direct-fit OEM replacement, but requires standard valve train service tools, accurate seat machining or cutting as needed, and adherence to factory clearance and torque specifications during assembly.

What's included

Each package contains a single titanium intake valve.