Wiseco 20x47x14 & 20x52x15mm Main Bearing KitWiseco main bearings are manufactured by many of the same suppliers to the OEMs, including leading Japanese manufacturers, and are inspected for accuracy, function, and cleanliness for efficient and reliable service. This Part Fits: Year Make Model Submodel 1974 1977 Kawasaki KX125 Base 1986 1988 Suzuki RM80 Base 1983 2001 Yamaha YZ80 Base 2002 2019 Yamaha YZ85 Base