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BSA/ Triumph Unit Single And Twins Gearbox Sprocket Nut
BSA/ Triumph Unit Single And Twins Gearbox Sprocket Nut Nut that holds the rear drive sprocket on the gearbox shaft. Suitable for all A50/A65, unit 3TA, 5TA, T100 models 1959-66 plus unit singles - C15, B25, B40, B44, B50, T250, TR25W etc. OEM: 57-1434, T1434, 40-3051