Ferrea Nissan RB25DET 30.6mm 5.96mm 88.95mm 21 Deg +1mm Super Alloy Exh Valve - Single (D/S Only)

This is a single exhaust valve from Ferrea, specifically made for the Nissan RB25DET engine. It's a +1mm oversized valve, meaning it's slightly larger than stock, which can help improve airflow into the cylinder. The valve is constructed from a super alloy material, chosen for its ability to withstand the high temperatures and stresses found in performance exhaust applications.

The specific dimensions are 30.6mm for the head diameter and 5.96mm for the stem diameter, with a 21-degree seat angle. This valve is designed for the exhaust side only and is sold individually, so you'll need to order the correct quantity for your engine rebuild. Ferrea is known for making well-built valvetrain components, and this valve is a solid option if you're working on an RB25DET engine that needs new or upgraded exhaust valves.