Supertech Mitsubishi 4G63 Black Nitrided Exhaust Valve - +1mm Oversize - Set of 8

The Supertech Mitsubishi 4G63 Black Nitrided Exhaust Valve is a high-performance replacement component designed for Mitsubishi 4G63 engines. Crafted with black nitrided surface treatment, these exhaust valves offer enhanced durability, corrosion resistance, and improved heat retention. The +1mm oversize specification allows for increased airflow and better sealing, contributing to improved engine efficiency and power output. Manufactured by Supertech, these valves are engineered to withstand demanding conditions, making them suitable for performance applications. Their robust construction ensures long-lasting performance, whether used in street or track environments.

Designed specifically for Mitsubishi 4G63 engines, these valves are compatible with models from the early 1980s through the 2000s, depending on engine configuration. They serve as direct replacements or upgrades for stock valves, ideal for rebuilds, performance tuning, or racing setups. The set includes eight valves, suitable for both intake and exhaust positions, and can be installed as bolt-on components with standard valve replacement procedures. These valves are intended for use in high-performance builds, ensuring reliable operation under increased stress and heat conditions.