日本製鋼所
KTM uses AAR couplers on its trains. All trains on the MRT network, including work trains, use Scharfenberg type 35 couplers. The Bukit Panjang LRT uses BSI (Bergische Stahl Industrie) couplers whereas the Mitsubishi Crystal Mover vehicles used on the Sengkang and Punggol LRT use the compact tight coupler from Japan Steel Works.