Used motor graders Komatsu GD511,GD623,GD605 for sale KOMATSU GD605R Year:1994 Price:23000$ Original made in JAPAN. Very good engine and hydraulic system. New tires,works speedly. KOMATSU GD623A Year:1996 Price:35000$ Original made in JAPAN. Very good engine and hydraulic system. New tires,works speedly. KOMATSU GD511A Year:1997 Price:33000$ Original made in JAPAN. Very good engine and hydraulic system. New tires,works speedly.