These are just a few of the reasons why so many customers love a two-stroke YZ. Like its big brother, the YZ125 has many features found on our championship-winning four-strokes. Class-leading power flows from a liquid-cooled, 124cc crankcase-reed-valve-inducted two-stroke that feeds through a close-ratio six-speed transmission, for outstanding acceleration and corner-exiting power. The aluminum semi-double-cradle frame is made from a unique mix of castings, forgings and extrusions that provide stiffness and flexibility where needed. Excellent handling, good ride quality, superior stability and responsive cornering performance; YZ125.