Anthony Kappes and Craig MacLean won Paralympic gold in a stunning all-British tandem sprint final on the fourth and final day of competition at the London 2012 velodrome.
Kappes, who is partially sighted, and his pilot MacLean claimed a 2-0 win in the best of three final against team-mates Neil Fachie and his pilot Barney Storey.
In the second bout, Kappes and MacLean accelerated to overtake their rivals with a lap and a half to go before swooping down to the racing line.
Storey and Fachie nearly lost control behind them and sat up, settling for silver.
It was a second successive tandem sprint gold for Kappes, who won the title alongside Storey in Beijing in 2008.
Britain won both golds in the tandem sprint events, after Fachie and Storey won one-kilometre time-trial gold, when Kappes and MacLean did not finish due to mechanical trouble.
Darren Kenny, Rik Waddon and Jon-Allan Butterworth had to settle for silver in the mixed C1-5 team sprint.
China won in a world record of 49.454, with Britain second in 49.519.
It was Butterworth's third silver from three events, with two to come on the road at Brands Hatch next week.