Introduction of 499cc B50T (Victor Trail),
B50SS (Gold Star Street Scrambler) and B50MX
(Civtor MX). All have a competition-derived
oil carrying frame and high exhausts. They trace
their engine heritage to the 1958 250CC BSA
C15 unit single, the 1961 350cc B40 and the
1966 441cc B44. The B50MX competition model
features stainless steel mudguards, yellow side
panels (white for the US market) and matt black
exhaust. B50T has high level front mudguard
and lower gearing than the SS. All have roller
bearing big ends plus an extra drive-side bearing
to cope with the extra power.
The B50T and B50MX have a 6in single leading
shoe front brake, the B50SS has a twin leading
shoe type. Some B50 exampes were badged as Triumph
(TR5MX) for the US market. None of the B50 series
had rev counters.
Black frames replace light grey. B50MX alloy
tank features white centre stripe and ‘Flambordeaux’
side stripes. B50SS now with matt black exhaust.
Fuel tank, side panels and mudguards in Hi-Violet.
Last year of production 1916 SS and 3346 Victor
T models produced for UK market in total.
Existing stock of B50T and B50SS models continue
to be sold, ’73 model B50MS listed. BSA
goes out of business.
CCM buys BSA’s competition department
stock and develops its own B50 based 500cc unit
single racer. This was made until 1979.