These wheels fit the 1998 - 2006 Suzuki GSX600F and the GSX750F Katana models. The stock OEM wheel sizes are, front 17" diameter x 3.5" wide, and the rear is 17" diameter x 4.5" wide. The 1998 - 2002 Suzuki GSX600F and GSX750F Katana models come with different bearings and dust seals than the 2003 - 2006 models. Please make sure to specify on your order, which year model your application is for in order to recieve the correct product.