Triumph Bonneville Wikipedia
The early 650 cc T120 Bonneville often known as the duplex frame model was replaced in the early 1970s by the T140 Bonneville the same basic machine but with a 750 cc engine Refined from the later oil in frame version of the T120 the first few T140s designated T140V featured a larger capacity engine of 724 cc a five speed gearbox option and indicators but still retaining drum brakes