2003 Suzuki DR-Z125, 2003 Suzuki DRZ125 Recreational Dirt Bike, 5-Speed Manual Clutch, Great for Beginners! - The DR-X400S is a new entry-level off-road model. The compact 125cc 4-stroke, SOHC, single-cylinder, air-cooled engine is based on the DR125SE DualSport model.