Motorcycles Motocross 6705 PSN . the YZ125 is the perfect transition from a YZ85 to a YZ250F. 2015 Yamaha YZ125 Motoworld of El Cajon - Your Journey Starts Here! the LEGEND CONTINUES. Plus YZ two-strokes simplicity means low cost maintenance...a win-win for all the true moto fans out there. One ride and you will be amazed at the light handling and the simple fun the YZ125 provides...