High Quality Content by WIKIPEDIA articles! The BSA Rocket Three / Triumph Trident was the last major motorcycle developed by Triumph Engineering at Meriden, and was a 750 cc air-cooled unit construction pushrod triple with four gears and conventional chassis and suspension. It was badge-engineered to be sold under both the Triumph and BSA marques. The Rocket3 / Trident was part of Triumph`s plan to extend the model range beyond their 650 cc parallel twins. Created to meet the demands of the USA market, the smooth 750 cc three-cylinder engine had less vibration than the existing 360° twins. BSA fell into serious financial troubles, but during the seven-year production run 27,480 Rocket3 / Trident models were produced.