Britain's win made Kenny a triple gold medalist, while Cundy and Bristow joined teammate Simon Richardson as the proud owners of twin gold.
With its men and women taking gold in every event they entered, Britain made a unique Paralympic gold clean sweep.
"For us, the British cycling team, I think we exceeded what we expected - eight gold," said Kenny. "We've got 12."
Over the past four days at the Laoshan Velodrome, cyclists broke 20 world records in a total of 21 categories, more than at any previous Paralympics.
Road racers will take to the Olympic triathlon venue around north Beijing's Ming Tomb Reservoir from Thursday until Sunday.
(China Daily September 11, 2008)