- Single row ball bearing - Fitted to the outer of the two driveside mainshaft bearings in the crankcase on all SOHC engines, both International and early Manx. This is the correct C3 (loose tolerence) type, from top quality manufacturer RHP.
12/6/14: Back in stock again but now virtually unobtainable! I have managed to find some, but price risen again . . . this could be the last batch available!