Cane Creek headsets have replaceable bearings - below is a list of headset standards and the bearing size.

EC30 will take a 38mm bearing
EC34 will take a 41mm bearing
ZS44 will take a 41mm bearing
ZS49 will take a 41mm bearing
EC44/40 will take a 52mm bearing
EC44/33 will take a 47mm bearing
EC49 will take a 52mm bearing
ZS56 will take a 52mm bearing
ZS62 will take a 52mm bearing
IS41 will take a 41mm bearing
IS42 will take a 42mm bearing
IS47 will take a 47mm bearing
IS52 will take a 52mm bearing

Pro tips:
Your headset requires an upper and lower bearing (Tapered headsets require two different size bearings)
All Cane Creek headset bearings are cross compatible with Cane Creek headsets no matter the series (i.e 110 Series bearings are compatible with 40 Series cups).