CxK

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CxK (train)
A Class 3000 at Belfast Lanyon Place.
In service	2003–present
Manufacturer	CAF
Number built	DMU: 72 units EMU: 72 units
Operators	NI Railways Iarnród Éireann Transdev Auckland
Specifications
Maximum speed	DMU: 120–145 km/h (75–90 mph) EMU: 110 km/h (68 mph)
Electric system(s)	EMU: 25 kV 50 Hz AC
Track gauge	DMU: 1,600 mm (5 ft 3 in) EMU: 1,067 mm (3 ft 6 in)

CxK is an unofficial name given to a family of multiple unit trains produced by CAF for Ireland and Auckland. There are four types in operation, and they are the main suburban and commuter trains in Ireland. The name derives from NI Railways "C3K" and "C4K" classes.