We report two cases of trifurcation lesions that were successfully treated with simultaneous triple-balloon inflation. One of the potential limitations with using simultaneous triple-balloon inflation has been the requirement for a larger guiding catheter (8 Fr or larger). This limitation was overcome by using 0.010 inch guidewires and 0.010 inch guidewire compatible balloon catheters with a 6 Fr guiding catheter via a transradial approach (The King Ghidorah Technique). The other advantage of the simultaneous triple-balloon inflation was to obtain an almost complete round circle (symmetry index 0.9) at the left main coronary artery by intravascular ultrasound imaging.