The GE BB40-9W is an 8-axle narrow-gauge version of the popular GE C40-9W locomotive. All 141 examples of this locomotive are owned by the EFVM railroad in Brazil. They are equipped with four B-style trucks two at each end replacing the conventional C-style trucks. This is necessary because EFVM tracks are 1000 mm (3 ft 3 3โ8 in) narrow gauge.
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