 The trains use bolsterless bogies developed from those used on earlier E259 series and E657 series trains.Motored bogies with capability for retrofitting anti-oscillation equipment (rear bogies on car 1 and 3) are designated DT81, motored bogies equipped anti-roll devices (cars 2, 5, 7, and 10) are designated DT82, and motor bogies not equipped with either (cars 6 and 11) are designated DT81A.Non-powered (trailer) bogies are designated TR265, and are equipped with a parking brake and capability for retrofitting anti-oscillation equipment, but those not equipped with a parking brake (rear bogies on cars 4 and 14, and both bogies on car 9) are designated TR265A, and those on car 8, which not equipped with either are designated TR265B.