BSA SS90 B40 350cc pre 65 trials bike road registered new V5, not a C15
Here we have for sale, i'm told bit of rare bike, genuine BSA SS90 thats been expertly modified into competition trials bike.I don't know much of the history sadly but do have the original buff log book which shows it started out as SS90 but then the engine was swapped for C15 250 however it now has B40 ...