Ferrea Subaru FA20 36mm 5.46mm 103.45mm 10 Deg S-Flo Flat Head +1mm 6000 Series Int Valve - Set of 8

These Ferrea 6000 Series intake valves are built with a 36mm S-Flo flat head design and a 10-degree back angle, measuring 103.45mm in length with a 5.46mm stem. They are designed to be a +1mm oversized option for Subaru FA20 engines, offering an improved flow path into the combustion chamber compared to stock valves.

Crafted from Ferrea's 6000 Series alloy, these valves are well-built to handle the demands of performance-oriented Subaru engines. The S-Flo design is intended to help improve airflow, which can contribute to better engine performance. The +1mm sizing means these valves have a slightly larger head diameter, allowing for a greater surface area to ingest air and fuel mixture. This is a common modification when rebuilding or upgrading the top end of an FA20 engine for increased power output.

This set includes eight valves, enough to replace all intake valves for a single FA20 engine. Ensure you have the correct valve spring and retainer combination to match these valves for optimal performance and reliability.