Ferrea Mitsubishi 4B11T 30mm 5.46mm 105.90mm 25 Deg Flo +1mm Sgl Grv Super Alloy Exh Valve- Set of 8

This set includes eight Ferrea exhaust valves, specifically made for the Mitsubishi 4B11T engine. These valves are built from a super alloy material, chosen for its ability to withstand the high temperatures and stresses found in performance exhaust applications. Each valve measures 30mm in diameter with a 5.46mm stem and a total length of 105.90mm, featuring a 25-degree seat angle and a single groove design. They are also surfaced with a +1mm over size to accommodate specific engine builds.

The super alloy construction is key here. It's a well-built material that holds up better under extreme heat than standard steel, which is important for exhaust valves that deal with the hottest gases leaving your engine. The 25-degree seat angle and the single groove design are standard features that ensure proper sealing and valve retention within the cylinder head. The +1mm sizing means these are intended for engines that have been machined or modified to accept slightly larger valves, often part of a performance rebuild to improve airflow.