Ferrea Subaru FA20 30mm 5.45mm 97.6mm 29 Deg Flo Flat Head +1mm Super Alloy Exhaust Valve - Set of 8

This set includes eight Ferrea Super Alloy exhaust valves, each measuring 30mm in diameter with a 5.45mm stem and a 97.6mm overall length. These are designed as a +1mm oversized replacement, featuring a flat head with a 29-degree seat angle, specifically intended for Subaru FA20 engines.

Crafted from a super alloy, these valves are built to handle the higher temperatures and stresses found in performance or rebuilt FA20 engines. The +1mm oversizing allows for a larger sealing surface, which can be beneficial when resurfacing valve seats or when rebuilding an engine to its original specifications with new components. The flat head design is a common update for improved flow characteristics over stock designs.

When rebuilding or upgrading your Subaru FA20's cylinder heads, using valves made from robust materials like these super alloys is important for long-term reliability and performance. Ensure your valve guides and seats are properly prepped for the +1mm oversized valves to achieve a proper seal.