Duple 425
Coach design built by Hestair Duple in the late 1980s / From Wikipedia, the free encyclopedia
The Duple 425 was a coach design built by Hestair Duple in the late 1980s, and briefly by Plaxton in the early 1990s.
It was a fully integral coach, unlike most contemporary British designs which had a separate body and chassis, and was notable for its streamlined design with a sloping upper windscreen and a drag coefficient of Cd=0.425, hence the model designation.