Stainless Exhaust Valves $12.99 size 1.55 inch 1.55 inch 1.57 Inch 1.60 Inch 1.55 inch 1.57 Inch 1.60 Inch Add to Cart Please enter your email below if you'd like to be notified when it's available. Your Email Send This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. These are made out of 2000 series stainless which is 21-4n material. Sold individually. A whole intake set would require 8.