Ferrea Honda H22A1/A4 31mm 5.48mm 107.1mm 22 Deg Flo +1mm Super Alloy Exhaust Valve - Set of 8

Ferrea offers a set of eight Super Alloy exhaust valves specifically for the Honda H22A1 and H22A4 engines. These valves are designed with a +1mm oversized head diameter, measuring 31mm, which helps improve exhaust gas flow out of the cylinder. The overall length is 107.1mm, and they feature a 22-degree seat angle, often referred to as 'Flo' valves, which can contribute to better sealing and flow characteristics.

Crafted from a high-performance super alloy, these valves are built to withstand the high temperatures and stresses found in performance engine applications. The material choice is crucial for exhaust valves, as they operate in one of the hottest environments within the engine. Ferrea's use of this advanced alloy helps ensure durability and consistent performance over time, especially when you're pushing the engine harder. The +1mm sizing is a common modification for enthusiasts looking to maximize airflow from their H22A1 or H22A4 cylinder head.