Since the start of the revised timetable on 18 March 2023, Kusatsu/Shima services are operated by E257-5500 series EMUs, replacing the earlier 651-1000 series EMUs, which in turn replaced the previous 185 series trains.
In September 2010, 185-200 series 7-car EMU set OM03 was repainted into the Shōnancolour scheme of orange and green to recreate the appearance of the early 80 series EMUs, as part of the 50th anniversary celebrations of the Kusatsu limited express service scheduled for October of that year.