2012 YAMAHA YZ250, b WE LOVE THE SMELL OF PREMIX IN THE MORNING /B p Our legendary two-stroke Supercross winner is more potent than ever with a light aluminum frame housing a patented YPVS Power valve-equipped engine that delivers great power-to-weight ratio. YZ250 is ready to race out of the crate complete with ProTaper aluminum handlebar, titanium footpegs, gripper seat and Excel rims.