GSX-R600K4 GSX-R600K5 GSX-R600XK5 GSX-R750K4 GSX-R750K5 GSX-R750XK5 GSX-R 600 / 2004 GSX-R 600 / 2005 GSX-R 600 / 2005 / 20th GSX-R 750 / 2004 GSX-R 750 / 2005 GSX-R 750 / 2005 / X-20th