The firm manufactures the transcowl for the aircraft's CFM International Leap-1A nacelle, which is supplied by Safran Nacelles. MRAS has helped to deliver almost 900 nacelles for the Leap-1A. It also builds nacelle components for the General Electric CF34 turbofans that power the Embraer E-Jet and Comac ARJ21, and for the Leap-1C that powers the Comac C919. Among other programmes, MRAS builds thrust reversers for the GE Aviation GEnx on the Boeing 747-8 and nacelles for the GE Passport which powers the Bombardier Global 7500. The work on the Leap-1C and Passport is provided through Nexcelle, a joint venture between MRAS and Safran Nacelles.