The Suburban Multiple Units are a class of electric multiple units manufactured by Walkers Limited/Downer EDI Rail Maryborough for Queensland Rail’s Citytrain division between 1994 and 2011. The Suburban Multiple Unit is divided into in three subclasses sets 201-212 as the 200 series sets 221-251 as the 220 series and sets 261-296 as the 260 series.