JPX919 Hot Metal Irons: Chromoly 4140M

The JPX919 Hot Metal provides a benchmark in iron design, engineered for the perfect blend of ball speed and soft, controllable landing angles. High-strength Chromoly 4140M has paved the way to a new multi-thickness face that promotes astonishing ball speeds, while a seamless one-piece cup-face construction ensures surprising levels of feedback even at such unprecedented ball speeds.


The JPX919 Hot Metal model shares the JPX919 Tour’s new stability frame, which is open at the heel portion to enhance stability, launch and a loft-appropriate flight apex for controlled, soft-landing approaches. Re-engineered Sound Ribs have been developed to hit specific vibration patterns that ensure a satisfying sensation through impact, with the JPX919 Hot Metal featuring the same Pearl Brush finish as the JPX919 Tour.


Engineered from a softer X30 steel and blessed with precision-milled grooves and faces for improved spin and control around the greens, this model in the JPX919 series offers a steeper transition into more compact scoring irons and wedges. Set-matching gap, sand and lob wedges are available this September.


“The most impressive thing about the JPX919 Hot Metal is the launch control and flight apex,” says Chris Voshall, Senior Engineer at Mizuno. “The extra ball speed and distance doesn’t come from low-flying bullets – we work the design backward from the correct landing angles. These are irons for the golf course, not just the launch monitor!”



Stay up to date on Mizuno’s new JPX919 series @MizunoGolfNorthAmerica.


Published: September 2018