SPOTTED: Mizuno JPX921 Iron Series

In today’s world where equipment launches come on a nearly weekly basis, there are few things that capture your attention. But when the best iron manufacturer releases something, you listen.

Since the release of the JPX900s, Mizuno’s JPX Series has become a revitalizing force for the brand, largely with the help of Brooks Koepka and his back-to-back 2017/2018 US Open and 2018/2019 PGA Championship wins.

So in a continued effort to use technology to modernize and refine to develop the finest irons, Mizuno has finally released the next evolution of JPX – the JPX921 Series, a highly engineered family of irons that has been developed alongside Mizuno’s comprehensive custom-fitting program to deliver exceptional performance and help all golfers get the very most from their games.

 

 

 

 

 

 

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A post shared by Mizuno Golf North America (@mizunogolfnorthamerica) on Aug 3, 2020 at 7:01am PDT

“Applying the potential of Chromoly means that the JPX921 irons hold their own in any simulator test – without having to crank #7 iron lofts at all cost. Look, feel, launch, spin and landing angles have to be right through the set. Ultimately what sets Mizuno irons apart,” says David Llewellyn, Director of R&D for Mizuno.

 

 

 

 

 

 

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A post shared by Mizuno Golf North America (@mizunogolfnorthamerica) on Aug 10, 2020 at 6:01am PDT

JPX921 Forged — Faster, Forged, First

The JPX921 Forged iron integrates the power of Chromoly into a full body forged iron for the very first time. Initially applied in Mizuno’s Hot Metal irons – Chromoly has made the cross over to Mizuno’s forgings with staggering results. Indeed, testing has shown the fastest ball speeds Mizuno has ever produced from a fully forged iron.

Grain Flow Forged HD in Mizuno’s legendary facility in Hiroshima Japan, the JPX921 Forged irons offer an identifiable and unsurpassed Mizuno feel. The integration of Chromoly 4120 allows for a clubface up to 0.5mm thinner which delivers the fastest ball speeds Mizuno has ever produced from a full body Forged iron.

The increased ball speeds are complemented by additional perimeter weighting with toe bias creates a Stability Frame to maximize results from off-center strikes, while a 6.4% wider CNC back milled slot further increases stability.

Despite this, the JPX921 Forged irons offer a sleeker, compact profile – a shorter blade length throughout, a beveled training edge and reduced offset. The feel is that of a traditional forged iron as the JPX921 Forged gets noticeably sleeker through the set.

 

 

 

 

 

 

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A post shared by Mizuno Golf North America (@mizunogolfnorthamerica) on Aug 10, 2020 at 7:01am PDT

JPX921 Tour — The Chosen One

The most chosen Mizuno model on the Tour among non-contracted professionals – the JPX900 Tour and JPX919 Tour were both played to win Major Championships. The stunning new JPX921 Tour maintains its predecessor’s surprising fusion of precision with stability from off-center strikes. Now even thicker behind impact for an enhanced, softer feel with tour refined short irons for smoother turf interaction.

Grain Flow Forged HD from 1025E Pure Select Mild Carbon steel, the JPX921 Tour delivers an identifiable and unsurpassed Mizuno feel. In addition, Mizuno’s Stability Frame with toe bias weighting promotes a longer, straighter and more consistent ball flight, even on off-center strikes.

The shorter irons feature a narrower sole for improved turf interaction while a thicker cavity pad throughout the set, evolving from Mizuno’s study of vibration patterns, produces a harmonic impact that can be felt for a fraction longer.

With a pearl brush, anti-glare finish to minimize distractions over the ball, the JPX921 Tour offers the sharper, stripped-back functional look that the modern player appreciates.

 

 

 

 

 

 

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JPX921 Special Edition Leftie (SEL)

The first left-handed Mizuno JPX Tour irons since it’s conception in 2016. Built into a combination set with JPX921 Forged long irons (#4 and #5) and JPX921 Tour mid and short irons (#6-GW) for the perfectly balanced set up. Lofts have been pre-adjusted for perfect distance gapping between the models.

 

 

 

 

 

 

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A post shared by Mizuno Golf North America (@mizunogolfnorthamerica) on Aug 10, 2020 at 8:04am PDT

JPX921 Hot Metal / Chromoly 4140M

The JPX921 Hot Metal irons deliver Mizuno’s fastest ever ball speeds, a piercingly straight ball flight together with controllable landing angles. The JPX921 Hot Metal represents the 3rd generation of Mizuno irons to utilize the resilience of Chromoly – R&D generally accepts that any new technology needs three generations to reach near-optimal performance.

The use of Chromoly 4140M and a re-engineered CORTECH face, now 0.2mm thinner across the center point, creates exceptional ball speeds. These are further enhanced by the Seamless Cup Face featuring a variable thickness sole design that allows the leading edge to act as a hinge, generating greater flex.

Three additional sound ribs produce a more solid sensation at impact while extreme perimeter weighting and toe bias in Mizuno’s Stability Frame help to deliver greater consistency from off-center strikes.

“The introduction of Chromoly was the breakthrough Mizuno needed to take a step up in ball speed. We learn more about the potential of Chromoly with each generation and push it further each time,” says David Llewellyn.

All JPX921 irons will be available through the Mizuno Custom Program, which offers one of the widest selections of no upcharge shafts and grips in the industry. It provides a comprehensive range of custom fitting options from state-of-the-art Mizuno Performance Centers across the United States as well as our expansive network of Mizuno Fitters that use the Mizuno Shaft Optimizer and high-tech Swing DNA software to pinpoint each customer’s best-performing specifications.

Mizuno has strived to “create the best products for consumers” for 114 years, and the entire JPX921 iron family adheres firmly to that original spirit and desire, while offering the best performance benefits that modern technology can bring, because at the end of the day, Nothing Feels Like a Mizuno.

The Mizuno JPX921 family of irons and hybrids is available for pre-sale beginning August 31st and full retail availability starting September 12th. Hopefully we’ll be able to get our hands on some of the JPX921 Series irons for testing, but in the meantime you can read more about the new JPX921 irons, along with the rest of Mizuno’s range of golf equipment, apparel and accessories, at MizunoGolf.com.