1977 Triumph 744cc T140 'Silver Jubilee' Bonneville
Registration no. WYN 639S
Frame no. JP84625J
Engine no. T140V JP84625J
The final phase of the Triumph twin's development began in 1972 with the first appearance of the new 750cc version of the Bonneville, the increase in bore size necessitating a new crankcase to accommodate the larger barrels. Other improvements included a new ten-stud cylinder head, triplex primary chain, stronger transmission and a disc front brake. A five-speed gearbox, introduced on the preceding 650 Bonneville, was standard equipment on the 750. Despite the age of the basic design and strong competition from Japanese and European manufacturers, the Bonnie remained for many years the UK's top-selling 750. In 1977 Triumph introduced a special, limited edition Bonneville to celebrate HM Queen Elizabeth II's Silver Jubilee. This was basically the standard Bonnie enhanced by a red, white and blue on silver finish, coachlined cycle parts, and a chromed timing cover and primary chaincase. One thousand were made for the UK and another thousand for the USA, while a further 400 were despatched to other markets.
This example of one of the more collectible of later Bonnevilles comes with a United States 'Temporary Identification' label stating that it was sold new in Los Angeles, California to one Michael Betterton. It was first registered in the UK in September 1990, passing to the current owner the following month, and was extensively refurbished by 'Charlies' of Bristol in December 1991 (bill on file). The machine is offered with Ownership Certificate (blank), owner's handbook, guarantee card, sundry service invoices, two expired MoTs (1991) and Swansea V5 registration document. A total of only 169 miles is currently displayed on the odometer.