The pins themselves are not rusty, what looks like rust is grease.
Genuine Quinton Hazell king pin set QP 689T Leyland Boxer Terrier Redline
Genuine Quinton Hazell King Pin kit QP 626TC Ford 2-4 ton D series 1965-82
King Pin Repair Kit, kingpin QUINTON HAZELL QP650TC Possibly MG Or Austin Healy
Genuine Quinton Hazell king pin set two sides Leyland Blueline Clydesdale Reiver
Genuine Quinton Hazell King Pin set QP698T Leyland Blueline Redline Commer Dodge
Genuine Quinton Hazell King Pin set QP734C Commer / Dodge Commando 100 1974 on