| SL C1 | |
| Service: | 1950-1983 |
| Manufacturer: | ASEA, |
| Family: | Cx |
| Yearconstruction: | 1949-1950 |
| Numberbuilt: | 20 |
| Numberservice: | 0 |
| Fleetnumbers: | 2001-2020 |
| Carlength: | 17620frac=64NaNfrac=64 |
| Width: | 2700frac=64NaNfrac=64 |
| Height: | 3670frac=64NaNfrac=64 |
| Maxspeed: | 80km/h |
| Weight: | 30 t |
| Traction Motors: | ASEA LJB29 |
| Poweroutput: | 324 kW |
The SL C1 was the first rapid transit train type used in the Stockholm metro from 1950 until 1983. 20 trainsets were manufactured by ASEA and between 1949 and 1950; the first set being delivered to Stockholm on 2 June 1949.[1] Wagon 2003 was rebuilt to C2 in 1956, and wagons 2001 and 2002 were rebuilt to said model in 1965. Wagon 2009 was taken out of service in 1978, wagons 2004-2008 between 1980 and 1983 and wagons 2010–2020 in 1983.[2]