| Origin | FMSR | Builder | Sentinel, England |
| FMSR Class | SR | Cylinder | |
| FMSR Number range | SR1-12 | Boiler Pressure | |
| KTM Class | 25 and 26 | Driving Wheel Diameter | |
| KTM Number range | 251.01, 252.01-05, 261.01-06 | Water Capacity | |
| Introduced | 1930 | Weight Full | |
| Extinct | Unknown | Tractive Effort |
11 Sentinel steam railcars ran in Malaya. The Class 25 and 26 railcars were classic Sentinel railcars, typical of vehicles exported all over the world by this company. Unlike convention locomotives, the Sentinel power units had vertical boilers and geared transmission. The class 25 had a 4 wheel power bogie, whilst the class 26 had a 6-wheel power unit. These vehicles survived long enough to be allocated post-war numbers, but must have been withdrawn before the Class 26 diesel railcars were introduced in 1966.