Revington TR information: TR250, 5 and 6 standard nut. 7/16"UNF 11/16" AF. For high compression engines use our deeper nut part number NP607162 This item has a secondhand part available - see below
Revington TR information: TR5-6 Longer head nut ½" tall (actually 12-88mm tall) standard is 11.11mm tall. For use on modified TR250, 5 and 6 heads Where this nut is being used to mount the exhaust manifold you might want... READ MORE