These competition-quality valves are constructed of forged EN24N stainless steel. They are high-flow thin profile with waisted stems and take single groove keeper. Long-stem, for 1275 12G940 and 12G1316 cylinder heads. These valves require matching keepers, see 88G0459. Sold each.
This valve has been discontinued by the manufacturer so we are down to the last few.
Verify which type of valve tip you need, see comparison picture.