Ferrea Subaru EJ20 33mm 5.96mm 104.75mm 25 Deg Flo +1mm Super Alloy Exhaust Valve - Set of 8

Starting with a 33mm head diameter and a 5.96mm stem, these Ferrea exhaust valves are built from a super alloy designed to handle the heat and stress of performance Subaru EJ20 engines. The +1mm sizing means they offer a slightly larger surface area for better sealing and gas flow compared to stock, which can be a notable improvement when you're rebuilding the top end or looking for more power. The 25-degree back angle is a common design choice that helps improve flow characteristics as the valve opens and closes.

Ferrea is known for making well-built valvetrain components, and this set of eight exhaust valves is no exception. The super alloy material is chosen for its strength and resistance to high temperatures, crucial for exhaust valves that see the hottest gases in the combustion chamber. This means they're a solid option if you're pushing your EJ20 beyond its factory limits or if you're performing a full engine overhaul and want reliable parts that can stand up to the demands.

When installing these, remember they are designed as a direct replacement for the stock exhaust valves in your Subaru EJ20. Ensure your valve guides are in good condition and properly sized for the 5.96mm stems to guarantee smooth operation and proper sealing. This set includes all eight exhaust valves needed for a complete engine build.