The South African Railways Class 11 2-8-2 of 1904 was a steam locomotive from the pre-Union era in Transvaal Colony.

In 1904, the Central South African Railways placed 36 Class 11 steam locomotives with a 2-8-2 Mikado type wheel arrangement in service.

[1][2][3][4] Built by the North British Locomotive Company (NBL), the Class 11 was designed for goods train service on the Reef by P.A.

Upon delivery, however, the class was found to be too heavy for a large part of the existing track and bridges on the line between Witbank and Germiston, where they were intended to work.

It took nearly a year to carry out the programme of track and bridge strengthening and some of the new locomotives ended up being held in staging for all that time before the Chief Civil Engineer would allow them to run.

[1][2][8] The Class 11 were powerful locomotives which gave good service at moderate speeds, but at higher speed the lightly loaded leading Bissel truck with its 6 long tons 1 hundredweight (6,147 kilograms) axle load proved unsatisfactory on curves.

Apart from these, the SAR had the temporary use on lease of a few Katanga Mikados to alleviate a locomotive shortage during the First World War.

[7][8] The main picture and the following photographs illustrate some of the modifications done to the running boards of the Class 11 locomotive, as well as the SAR and industrial liveries which were applied to it.