The industry's largest 4WD articulated tractor, the MT900B, is available from Challenger. The line of tractors features Tier III-compliant Caterpillar ACERT engines ranging from 430 to 570 hp for exceptional pulling power. The line of tractors features a robust triple point articulation design for maneuverability, and the heavy duty frame includes 145-mm-diameter bar axles, the largest in the industry. The MT900B comes in a wide variety of tire options and configurations.

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