Bearing set for Norton Commando 850 (set of 3), with roller bearing replacement for layshaft. Branded bearings either Japanese or Korean. Original Part Number: 9664; A2/316; 040098; 040298 - Norton Main gear wheel bearing x 1 9668; B2/322; 040100; 067710 - Layshaft left hand bearing x 1 ROLLER BEARING 9667; A2/321; 040099 - Norton Mainshaft right hand bearing x 1