The Yamaha YZ125 is a motorcycle with a 124 cc two-stroke engine designed for motocross riding and produced by Yamaha Motor Company. It was first produced in 1974 and for the first year was made with dual rear shocks (thermalflow shocks) and in 1975 released its first monoshock design the YZ125C and has continued production with a new model being produced every year to date. The YZ 125's produced from 1996 to 2002 are considered by some to be the best dirt bikes ever, due to its wide powerband and excellent handling. The YZ125 has been ridden to five AMA National Motocross Championships, and multiple AMA Regional Supercross Championships.[4] In 2001, Yamaha released a bike designed to complement the YZ125, the four-stroke YZ250F. The two bikes share a rolling chassis and are eligible to compete in the same racing class.
