Brand new PAIR ROYAL ENFIELD STANDARD ADJUSTABLE CAM SPINDLE ASSEMBLY. You will get two of these which will replace the old Cam spindle assembly in your bikes crank case. The one shown above are suitable for all Royal Enfield models except the AVL models. These ones are Standard in size, other sizes are available too. Please have a look at the parts manual linked below. Click the Following Tab to have a look at the spares Manual CRANK CASE Will replace part number : 140063 Must for restoration projects.