
The Manley Race Master 29.5mm stainless steel exhaust valve is specified for 1990–1996 Nissan 300ZX 3.0L engines (VG30D and VG30DTT) and is sold individually. Manley market material positions the Race Series for high‑RPM racing use and notes construction features such as swirl‑polished under‑head areas, fully machined combustion faces, chrome stems, and hard tips. The valve is recommended for alcohol engines and heavy‑duty race applications per the source.
Manley 90-96 Nissan 300ZX 3.0L (VG30D-VG30DTT) 29.5mm Stainless Race Master Exhaust Valve - Single