The 1985 BMW R 80 G/S Paris-Dakar race bike was a specialized, factory-supported competition machine, developed primarily by HPN Motorradtechnik, that notably carried Gaston Rahier to victory in the Paris-Dakar Rally. Unlike the 798cc production R 80 G/S Paris-Dakar, these race bikes featured a highly-tuned 1043cc flat-twin boxer engine producing approximately 75 hp at 7500 rpm. Key modifications included a heavily reinforced steel frame, long-travel, heavy-duty Marzocchi upside-down front forks