The success didn't stop there as on the following day, the pair took home bronze in the women's B 1km time trial.
"Winning two medals here at the world championships has exceeded our expectations," Hawke's Bay rider van Kampen said.
"We came in definitely looking for a win in the individual pursuit but to come away with a bronze in the time trial is pretty awesome."
Foy echoed her teammate's comments and said they were more suited to the individual pursuit race.
"It is a race where you must be composed and ride to a schedule that we decide before the race, whereas the time trial is a chance to absolutely smash it and not have to think too hard really."
Foy said they will both return to New Zealand to plan the year ahead which would start off with re-entry into road cycling and endurance training to compete in the national Road Cycling Championships in May and a UCI Para Cycling Road World Cup later in the year.
Para cycling head performance coach Stu MacDonald said the riders did well to keep their composure after learning of the events in Christchurch on Friday.
He said pair's efforts in training was the reason they were now world champions.
"Emma and Hannah just keep getting faster and are currently riding times we have not seen a New Zealand tandem produce previously.
"With Emma returning to Para cycling less than 12 months ago after a break following the Rio 2016 Paralympics, this was an outstanding result."
The New Zealand Para Cycling team had one last day of racing in the competition before returning home on Wednesday, March 20.