Mainshaft Bearing, for use on Bantam models, BSA C11/C12/C15/B40/C25/B25/B44/B50 Mainshaft bearing Norton Mod18/ES2/Dominator/Commando, Triumph TR25/TR25W, Villiers Junior 100cc single, AJS Matchless 16/18/G3/G80 (1957-) with AMC G/Box, 500/600 twins (1958-) with AMC G/Box, G15/33CSR (1965-). 
O.E.M: 90-0011, 04-0099, 70-8151. 
Supplied: Singles