The South African Railways Class KM 0-6-0+0-6-0 of 1904 was an articulated steam locomotive from the pre-Union era in Transvaal Colony.

The cylinders of the rear power unit discharged their exhaust steam up a chimney mounted in the coal bunker to the rear of the cab, while the front cylinders discharged in the usual manner up a chimney mounted on the smokebox in front of the boiler.

The auxiliary chimney at the rear avoided the need to have an exhaust steam pipe running the length of the locomotive to the smokebox at the front end.

[3] All three railways found their Kitson-Meyers to be poor steamers and, as built, none of these locomotives had a long service life.

Part of the problem could probably be ascribed to the fact that the exhaust steam from the rear power unit contributed nothing to the smokebox draught, the same phenomenon which would necessitate the installation of induced draught equipment on South Africa's Class 25 condensing locomotives half a century later.

[1][2][3] The modified CSAR Kitson-Meyer locomotive survived longer than its CGR and B&MR sister engines, which were all scrapped in 1912.