Mizuno unveiled the new JPX919 family of irons comprising of JPX919 Tour, JPX919 Forged and JPX919 Hot Metal, with each model engineered from different base materials to help enhance performance for particular swing types. The JPX919 Hot Metal, crafted from a new high-strength metal called Chromoly 4140M, paved the way to astonishing ball speeds. Now Mizuno is launching a new Hot Metal PRO version with a smaller profile in response to demands from better players for Hot Metal performance benefits in a more compact form.

“There has been a noticeable shift of better players towards the Hot Metal irons,” says Chris Voshall, Golf Marketing Manager at Mizuno USA. “We realized we could do more in that category and push the technology a bit further. The big surprise was how the ball speed and stability stayed near indistinguishable from the standard version, once we’d made the size and offset adjustment.”
What’s the Difference Between the Hot Metal and the PRO?

The JPX919 Hot Metal PRO shares all the essential design characteristics and performance attributes of the original Hot Metal model, which hailed a true benchmark in iron design. High-strength Chromoly 4140M allows 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 original head’s stability frame is open at the heel portion to enhance stability, launch and a loft-appropriate flight apex for controlled, soft-landing approaches, while re-engineered Sound Ribs generate specific vibration patterns that ensure a satisfying sensation through impact. A new, more durable Pearl Brush finish then helps to soften the head’s lines in bright sunlight.

Now all this is available in the smaller, more workable playing profile of the new Hot Metal PRO model, which features a slimmed-down top line and sole, plus reduced offset to bring Chromoly 4140M ball speed and performance benefits to players with a more traditional eye.

The JPX919 Hot Metal PRO offers a steeper transition into more compact scoring irons and wedges, with a set-matching gap, sand and lob wedges available, engineered from softer X30 steel and blessed with precision-milled grooves and faces for improved spin and control around the greens.

HotMetalPros 1

Mizuno has strived to “create the best products for consumers” for 112 years, and this latest addition to the JPX919 iron family adheres firmly to that original spirit and desire while offering the best performance benefits that modern technology can bring.

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Published: January 2019