The duo, racing in the blind/visually impaired events, collected gold in Friday’s time trial before adding the road race title on Saturday.
The man who started Great Britain’s 2012 goldrush
Crystal Lane won silver in the C5 road race and bronze in the time trial.
Paralympic champion Stone also took silver in the T2 time trial, while fellow 2012 gold medallist Mark Colbourne finished second in the C1 race.
Rachel Morris clinched bronze in a sprint finish to the women’s H3 road race.