BSA Parts List 1971, B50

BSA Parts Catalogue for 1971 B50T Victor 500 Trail, B50SS Gold Star 500 Street Scrambler, B50MX Victor 500 Motor Cross

Re-printed coil bound copy of the factory publication, A4 page size.

Covering Frame and Engine Numbers (at start of production year)

1971: From Engine and Frame Numbers:

JE.00101 B50T

JE.00101 B50SS

JE.00101 B50MX

In 1969 a new numbering system was introduced using a two letter prefix for the month and model season year. 

The first letter designates months as follows:
A: January  B: February  C: March  D: April  E: May  G: June  H: July
J: August  K: September  N: October  P: November  X:  December

The second letter is the year code:

C: July 1968 to July 1969 for bikes made for 1969 selling season.

Numbering started at 00101 and carried across all models.