These are the absolute ultimate stainless steel head bolts for the Harley Panhead and Shovelhead engines from 1948 to 1984.
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!
They still have the ARP Logo’s on the heads. Polished to a beautiful finish that will never chip, peel, or rust!