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. The Pro model is more compact, with minimal offset for confident ball-strikers seeking maximum ball speed.

Harmonic Impact Technology: Fine tuned head geometry delivers ideal impact feel and feedback
Seamless Cup Face: Thinned areas revolving 360 degrees around the perimeter increase rebound area for maximum ball speed across the entire face
CORTECH Design: Optimized face thickness distribution to maximize COR AREA
Variable Sole Thickness: Increase overall face flex area for add CORAREA
Acoustic Sound Ribs: Precisely dial in specific vibration patterns for a solid, explosive impact sound





Golf Club Flex


Hand Orientation


Golf Club Loft

‎1 Degrees




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Shaft Material

‎Alloy Steel

Item Weight

‎9 Pounds

Item Package Dimensions L x W x H

Package Weight

Item Dimensions LxWxH

Brand Name


Warranty Description

Model Name

Suggested Users




Part Number

‎Does Not Apply

Included Components


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