Koblingsstålplade BSA/triumph, 4 fjeder

 BSA B31,B32 (1958-), B33,B34 (1958-), A7/10 Sving arm (1958-62), A50/A65 (1962-72)

Triumph 350cc,500cc,650cc,750cc Twin cylinder (1946-83).

OEM 57-1363, 42-3195