Equipped with an EPA Tier 4 Final certified engine, the Komatsu D39PX crawler dozer has the cab forward design improved blade response, faster work equipment speed, and an additional “fast-blade mode” that improves blade speed for high-speed grading. The D39PX dozer is extremely maneuverable by providing full power to both tracks during turns or counter rotation steering. It is an ideal choice for any grading or earth moving applications.