[1] To make the A65R more of a 'sports version' of the original BSA A65 Star (and in anticipation of more stringent noise control legislation) it was given 'siamesed' two-into-one exhaust pipes with a special baffle, as well as chrome plated mudguards and headlight brackets.
[1] For the 1964 Isle of Man TT races, the BSA factory supplied the travelling Marshals with A65Rs, specially modified to be more 'racing-style' with lower handlebars, rear-set foot controls and a seat having a rear hump.
[4] A special version of the A65 branded as the A65T/R 'Thunderbolt Rocket' was aimed at the US market and featured high rise handlebars and a smaller fuel tank.
BSA's marketing team was slow to respond and new motorcycle development contributed to substantial losses, so by 1972 the company was absorbed into Manganese Bronze Holdings in a rescue plan initiated by the Department of Industry.
[5] The BSA Lightning Rocket was a highly tuned version of the BSA A65R Rocket and featured twin Amal 389/206 carburettors and high compression pistons combined with an optional close ratio gear box to give lively acceleration.