Description
Flange mounted twin cylinder unit which for most 360 degrees British pre unit twins.
Suitable on:
Triumph 500cc-600cc up to 1962, AJS and matchless twin 500cc, 600cc, 650cc from post war to end of production.
BSA pre unit engines 500cc-650cc
Norton 500cc,600cc, 650cc & 750cc, Atlas (Not Commando).
AJS & Matchless Twins, (Anti-clockwise)
Royal Enfield Twin 500cc, 700cc
Ariel Twin (Anti-clockwise)