JRK crawler systems exceed expectations operating in the harshest mining conditions our customers can throw at them. Our manufacturing partners use state of the art technology in the casting, forging, heat treatment and machining processes utilizing only the finest quality steel. JRK crawler system design pushes the limits of metallurgy adding the maximum amount of material in critical areas throughout all of our offerings and are directly interchangeable with original equipment. JRK also has you covered if you are looking to upgrade your undercarriage from its original OEM design with the most recent industry break through. This results in a undercarriage lineup that will keep you running and lower your operational cost per hour.