Loading... Please wait...Blistered Trucks Tuning Kit - Standard Conversion Kingpins. Includes 2 thin kingpins and 2 locknuts, specifically made for Blistered Trucks to switch from inverted to standard kingpin. Use two tools for installation and adjustments, one to hold the screw from the bottom of the baseplate (when removed from the deck) and one to tighten the locknut from the top.