This is a top quality race series long stem 1275 inlet valve is approx 3.580" long. Tuftrided for racing or ULP with good head shape and weight. Head is 37mm/ 1.475".
These valves are the choice of top engine builders including Graham Russell for 140HP plus 1300 engines.
These valves are suitable to machine smaller in head diameter as these smaller diameters are not readily available in top quality. Flow bench tested to produce top hp.
Picture is generic.
