CUP, CLUTCH SPRING, TRIUMPH/BSA UNIT SINGLE, EARLY
Part Number 57-3951
0.930" long overall, pre1971
Alternate numbers: 40-3218, 57-1144, 57-1927
Four required per motorcycle.
0.930" long overall, pre1971
Alternate numbers: 40-3218, 57-1144, 57-1927
Four required per motorcycle.