The Stemco Single Lock King Pin Kit is designed to provide superior stability and steering for your vehicle. This kit is made with materials of superior quality to guarantee sturdiness and prolonged use. It includes pre-sized bi-metal bronze bushings as an alternative to installing a reamed king pin, as well as self-cleaning bushings that remove particles to delay wear. The kit also features hardened lock pins that reduce axle damage. FleetPride is your First Click in Heavy Duty®.