Use the drop down menu to select which acorn nuts you desire - early or late. Acorn nuts are sold each
The early acorn nuts replace Triumph part number 70-1435 and E1435. Nuts come with a CEI thread pitch (26 TPI) and measure 3/8". Usually fitted on Triumph 650 twins up to approx 1972.
The late acorn nuts replace Triumph part number 21-0550 and S0550. Nuts come with a UNF thread pitch (24 TPI) and measure 3/8". Usually fitted on Triumph 750 twins from approx 1973-1982.