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
• Beveled Trailing Edge: Aggressive relief on the trailing edge for reduced turf drag
• V-Chassis: Engineered via Mizuno's Harmonic Impact Technology, the V-Chassis allows the top line to be thinner without sacrificing feel and sound.
• 4335 Nickel Chromoly: 4335 Nickel Chromoly is 20% stronger, allowing for an 8% reduction in face thickness, resulting in higher ball speeds.
• White Satin Brush Finish: A modern elegant, yet durable non-glare finish