Ferrea Exhaust Valve Set 28.5mm Head 4.96mm Stem Hayabusa

Exhaust valve for the 1999–2000 Suzuki GSX 1300R Hayabusa, the Ferrea comp exhaust valve delivers precise dimensional compatibility and trusted brand reliability for engine rebuilds and valve train maintenance.

• 28.5mm head diameter — Matches the required seating interface for the GSX 1300R cylinder head to ensure correct contact area and consistent valve operation.
• 4.96mm stem diameter — Corresponds to the valve guide bore used on 1999–2000 Hayabusa heads, supporting proper clearance and stable guide engagement under operating conditions.
• Comp exhaust valve design — Specified for exhaust service in the Hayabusa application to meet the geometry and duty cycle expected in high-revving four-cylinder engines.
• Set of 8 — Complete valve set for one cylinder head; packaged to simplify a full-valve replacement during an engine rebuild or head service.
• Ferrea brand — Sourced from a manufacturer known for precision valve components, providing consistency in manufacturing tolerances and repeatable fitment for performance-oriented applications.

This description focuses on the functional and dimensional attributes that matter during valve installation and engine assembly: correct head diameter for seating, accurate stem diameter for guide fit, application-specific exhaust profile, and a complete set quantity for head service. Use these valves when replacing worn or damaged exhaust valves during routine maintenance or a complete top-end rebuild on a 1999–2000 GSX 1300R Hayabusa.

Technical notes: The title specifies the model years, valve head and stem dimensions, and set quantity. Verify these dimensions against the cylinder head and valve guide specifications before installation to ensure compatibility with your Hayabusa engine and valve train components.