Bearing, mainshaft, single row ball, 1 inch x 2 1/4 inch x 5/8 inch, JAF or KSM Made in Japan. Suits Norton singles 1928 - 1968 outer drive side. AJS / Matchless model 16, 18, G3, G80 (1947-56; Ariel NG, NH Red Hunter (1946-61), 350 , 500 (1954-58), 500cc VH (1949-59) BSA B50 (1971-72); Royal Enfield 350,500 Bullet (1953-); Sunbeam 500 S7, S8. Original Part Numbers: 9033; A2/30 - Norton Mainshaft ball bearing driving side 65-5883 01-7191 1440-30 89-3022
