BSA BANTAM D1

Built: 1948-1963

Motor: Single-cylinder unit construction two-stroke

Capacity: 123.2cc

Power: 4hp

Top speed: 80kph

Price new: £60

Conclusion: The Bantam was BSA’s most popular model and one of the most successful motorcycles ever made in England, with the 175cc version in production until 1971. First D1 used rigid frame and telescopic forks, with plunger suspension available from 1950.