Created with human intelligence yet perfected by the artificial kind, MainFrame is a one-of-a-kind face design that increases ball speed on every shot. While our engineers set the parameters, our computers ran the simulations—thousands of them—until we had our fastest irons yet. Milled into the backside of each ZX Utility face, MainFrame is a variable thickness pattern made up of grooves, channels, and cavities. This pattern maximizes COR for more ball speed and incredible distance on every shot.

Even for the most skilled players, long iron shots pose a challenge. But the added forgiveness that comes from hollow construction makes it easier to pure your long irons, and that can make all the difference off the tee or when
going for the green in two.

Premium, high-density tungsten in the base of each ZX Utility lowers its center of gravity significantly. It’s the secret to making long irons that launch high. A forged SUP10 face is strong and light, increasing face-flex at impact for enhanced speed and distance. And a forged 1020 Carbon Steel body absorbs vibrations for softer feel.