BSA A10 RGS spec motor with twin 389 monobloc carbs. Short ride.

This A10 was made from a Super Rocket frame and RGS cases and bits collected over time so was not a candidate for a restoration. The motor was built on a bare case with RGS numbers. The resized conrods, ground crank, reground 357 cam, and +.020 pistons had to be found reworked and fitted. A twin carb head with 389 carbs gives it nice acceleration. Mag is rewound. Bike runs well as you can see. STD ratio gearbox and Triumph 3 spring clutch work fine.