Pretty Much Everything You Wanted to Know About Mizuno JPX 923 Hot Metal Irons

The Mizuno JXP line of irons has always been focused on one thing: the making of history. They’re not concerned with “creating instant classics or works of art.” For the engineers at Mizuno, this is about performance.

Mizuno’s JPX 923 Hot Metal Irons are just one more entry into that catalog of excellence. Here’s what they offer.

About 4335 Nickel Chromoly: The “Hot Metal” in the Name
The superstar of Mizuno JPX 923 Hot Metal Irons is 4335 Nickel Chromoly alloy, which is the “hot metal” behind the works.

This nickel-chrome-molybdenum alloy is 35% stronger than the alloy used in the original hot metal irons, allowing Mizuno to create an 8% thinner club face.

This unique chemistry has enabled Mizuno to create some of their fastest flying irons yet, which also deliver improved stopping power and unparalleled sensitivity.

Vibration Control
Mizuno’s JPX 923 Hot Metal Irons also feature their vibration-controlling V-Chassis and CG design, both of which improve feedback and control vibrations, resulting in a more functional iron that is also more enjoyable to swing.

Even with the thinner club face, Mizuno’s V-Chassis delivers a more satisfying vibration pattern. The optimized CG (center of gravity) design also results in clubs that offer advanced controllability and stopping power.

This deep center of gravity also allows for both controllable loading and high launch. improving shot control.

Consistent Ball Speeds, Greater Forgiveness
Mizuno’s JPX 923 Hot Metal Irons are not only developed for speed and stopping power; they’re also designed for consistent ball speeds across the club face.

Mizuno made the thinnest part of the sole an additional 18% wider, creating a wider high-energy area that offers greater forgiveness and consistency.

Improved Aesthetics
These Hot Metal Irons are finished with a non-reflective chrome plate that reduces glare. Just one more thing to love.

Some Extras
If you’re interested in the performance-driven and optimized design of Mizuno’s Hot Metal irons, consider their Hot Metal wedges as well.

They’re made from a softer X30 steel which offers greater feedback and control which are necessary in the short game, feature perfectly-centered sweet spots, and are CNC-milled for maximum consistency and control.

But Wait, There’s More: Explore the Hot Metal HL and Hot Metal Pro
Mizuno also produces two other Hot Metal Iron lines in addition to their standard flagship: Hot Metal HL and Hot Metal Pro Irons.

The Hot Metal HL clubs are ideal for players with moderate swing speeds and the Hot Metal Pro line is engineered with a slightly more compact design and minimal offset for players looking to maximize ball speed.

Interested in Learning More About Mizuno JPX 923 Hot Metal Irons? Talk to an Expert at
Want to learn more about what Mizuno JPX 923 Hot Metal Irons can offer your game? Visit Just Say Golf online at

They carry a variety of configurations (and shaft options) for these high-performance club heads and their experts would be more than willing to set you up with an outfit that’s optimized for your needs.

Get in touch with them via their website or contact them directly at 1-509-483-2888.

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