The JPX Q, like its Hot Metal sibling, benefits from Mizuno's unique Chromoly construction. This high-strength material allows for a thinner, faster cup face that yields superior ball speed. A CORTECH variable thickness design spreads speed across the hitting surface, effectively enlarging the sweet spot.

Mizuno strategically positions weight near the sole in the JPX Q, lowering the center of gravity, with a specific emphasis on the heel and toe. As a result, the iron remains stable at impact while effortlessly sending the ball airborne to a higher peak apex.

The stock shaft and grip are Mizuno's MFUSION and Iomic's Ultra Light. Weighing less than 50 and 40 grams, respectively, these lightweight components increase club head speed to maximize distance potential.