A modestly modified B50 Gold Star 500 entered by Mead & Tomkinson of Hereford, England and ridden by Nigel Rollason and Clive Brown won the 500cc class in both the Thruxton 500 miler and the Barcelona 24 hours ( at the Montjuïc circuit), and won the Zolder 24-hour race outright.
Also, a B50 fielded by Mead & Tomkinson once held the class lap record in the Production Isle of Man TT.
The BSA B50SS 'street scrambler' Gold Star was designed for road use and was partly aimed at the US market and proved its credentials by winning the 500cc class in the Thruxton 500 miler and the Barcelona 24-hour endurance race.
The model used Lucas electrics, Nippon Denso Speedo and rev counter and handlebar switches from Yamaha.
Specialist motorcycle designer Gerald Fitzpatrick created a 1000 cc BSA V-twin using parts from two B50 engines in 1977.
[9] The B100 prototype was ridden for two years and has been stored since but was featured in the magazine British Bike Mechanics in April 1978 and January 1988.