On 10 July 2010 the railway took delivery of a specially customised 4 coach diesel multiple unit capable of accommodating up to 90 passengers. Manufactured by
Severn Lamb UK Ltd., it was designed to enhance the visitor experience to the North Antrim Coast and to recreate, in so far as was possible, the passenger experience of the original hydro electric tram. Commissioning of the new rolling stock by the manufacturers began on Monday 12 July with the inaugural journey three days later. The DMU is powered by a Kubota V3600-E3 engine and shares the line with the previous steam rolling stock. All vehicles run on bogies. The power vehicle is on the Causeway side and is shorter (4 windows) than the three trailers (5 windows).