A Modern Motor Upgrade Kit To Replace The Hornby 3 Pole Ringfield Motors Fitted In The 4 And 6 Wheel Motor Bogies. Like The Intercity HST 125 Class 43, Class 20, 25, 29, 31, 35, 37, 40, 43, 47, 50, 60, 66, 67, 71, 73, 86, 87, 90, 91, 92, 101, DMU, Etc Diesel Train Loco's.