We do not currently have a good grinder burr for the older olympia moca grinders.
We have tried a few grinder burrs that fit, but the end result wasn't good.. After replacing the burrs with the new set, the grinders were grinding worse than before the change. Therefore, we stopped replacing the grinder burrs on these grinder.
We will update this page if anything changes so please do check back every once and awhile.
If you wish to try the burrs yourself, you can order them by clicking here. Please note, you will be required to drill and tap new screw holes.