Mizuno JPX923 Hot Metal Irons · Right handed · Steel · Stiff · 4-PW,GW
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OUR FASTEST FLYING, FAST STOPPING IRONS.
Introducing Nickel Chromoly – A new material with so much additional ball speed, our engineers switched their focus to feel and stopping power. At 35% stronger than our original Hot Metal material, 4335 Nickel Chromoly enables a high-energy 8% thinner clubface. Combined with Mizuno’s vibration controlling V-Chassis and deep CG design, the JPX923 Hot Metal irons are as enjoyable and controllable as they are long.
FASTER NICKEL CHROMOLY: New 4335 Nickel Chromoly is 35% stronger than our original Chromoly, for an 8% thinner, high ball speed clubface.
V-CHASSIS FOR MORE SOLID FEEL: Mizuno’s new V-Chassis delivers a more solid satisfying vibration pattern, even though the clubface is 8% thinner.
INCREASED STOPPING POWER: Seamless cup face construction delivers the deep centre of gravity needed for a high launch and controllable landing angle.
CONSISTENT BALL SPEEDS ACROSS THE FACE: The thinnest part of the sole is extended 18% wider, creating a wider high-energy area.
THREE FITTING OPTIONS – HM PRO, HM AND HM HL: 50,000 real golf swings recorded via Mizuno’s Swing DNA system every year highlighted the need for variable launch options.
WHITE-SATIN BRUSH: Non-reflective, Chrome plated finish to reduce bright light glare.


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Crafted from Chromoly 4335 which is 35% stronger than the Chromoly used in the JPX 921 hot metal irons. Highly durable and used in landing gear on airplanes. Using this highly tough material to build the new hot metal iron, allows the iron to be thinner on the face which generates more ball speed and distance and power. This is really the biggest change in the new 2023 model. However, Mizuno is also stating that these new irons push the boundaries of what the USGA allows legally for the thinner and hotter face. So, sounds like these really could be even more powerful than the 921 model which really was an amazing powerful iron. The hot metal 923 is the most forgiving in the new line. A little thicker top line than let's say the pro model. The long irons have a low deep center of gravity for higher launch while the middle and short irons are dialed in for accuracy and control!