Jost International has now made available an instructional guide for operating the Kingpin Gage Part #SK76001-01. The electronic document provides specific instructions for measuring the neck, shoulder, and length of the Kingpin.


Utility Trailer Manufacturing Company does not recommend any type of front sub modification, kingpin replacement, or cutting out the top and / or bottom plate of the box beam. Worn, damaged and improperly located kingpins require removal and replacement of the entire front sub assembly (approach plate and H-Beam assembly w/king pin).