Ferrea Ford DURATEC 23E 30.96mm 5.47mm 104.78mm 20 Deg Flo +1mm Comp Plus Exh Valve - Set of 8

If you're rebuilding the top end of your Ford Duratec engine, especially if you're looking to get more out of it, then a set of performance exhaust valves like these from Ferrea are a solid choice. These are the Comp Plus exhaust valves, designed to handle more aggressive use and higher cylinder pressures than stock.

Ferrea makes these valves from a strong, well-built steel alloy that's known for its durability under high heat and stress. They're a 1mm oversize exhaust valve, meaning they have a slightly larger diameter (30.96mm) than the factory ones. This helps improve airflow into the cylinder, which can lead to better performance. The 20-degree seat angle is also a common performance feature that can aid in flow. Each valve measures 104.78mm in length.

This set includes eight valves, enough for a typical four-cylinder Duratec engine. When installing these, make sure to check your valve guide clearances and consider matching them with appropriate valve springs and retainers for optimal performance and reliability.