Finally the only other thing to look out for with headsets is Head Tube Diameter. Most BMX bikes feature 1 1/8th inch Headsets. This is basically the thickness of the fork steerer tube, however some Race Specific BMX bikes for younger kids may feature 1 inch headsets. On the whole most BMX bikes take a 1 1/8th inch headset.
If you have any questions relating to what headset your bike might need them get in touch. email@example.com.