Wiseco 30 x 72 x 19mm Main BearingWiseco 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 2005 Suzuki RMZ450 Base 2003 2005 Yamaha WR450F Base 2004 2005 Yamaha YFZ450 Base 1998 1999 Yamaha YZ400F Base 2000 2002 Yamaha YZ426F Base 2003 2005 Yamaha YZ450F Base