These are the absolute ultimate stainless steel head bolts for the Vintage Harley Panhead and Shovelhead engines from 1948 to 1984.
ARP Manufactured from custom 450 Stainless! Heat treated/Age hardened to 180,000 PSI! (That’s stronger than grade 8 steel) Centerless Ground! Roll Threaded after heat treatment!
The ARP Logos and manufacturing marks have been removed and hand polished to a beautiful mirror finish that will never chip, peel, or rust!