PN Racing Mini-Z F1 Stainless Steel King Pin (2pcs)

This also works as lower hinge pin on the KMD-FR01 open wheel racer. It can also work as an upper hinge pin but could slip out. For the upper hinge pin, it is recommended to use a MR-02 kingpin as the upper hinge pin as it is 22mm in length as opposed to the F1 kingpin which is 20mm in length