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Expert Review: Mizuno JPX921 Hot Metal Single Iron

Published on 03/14/2023 · 5 min readThis review is my honest opinion of the golf club, which I bought in the spring of 2020 and played for about a year.
Joshua Malutan, Golf Expert
By Golf Expert Joshua Malutan

All photos courtesy of Joshua Malutan

About this Review: This review is my honest opinion of the golf club, which I bought in the spring of 2020 and played for about a year.

My take

The Mizuno JPX921 Hot Metal Single Iron is great for any mid to low handicapper looking for a forgiving and long iron. This iron has very minimal offset, which makes it ideal for a more advanced player to be more consistent on those long par 3s.

About the club I own

  • Model: Mizuno JPX 919 Hot Metal Pro 3 iron from 2019
  • Loft setting: 19°
  • Shaft type: True temper 105 steel stiff shaft.
  • Shaft flex: Stiff

About me

  • Average score: 80
  • Handicap: 9
  • Experience: 10 years of golf
  • Right/Left-Handed: Right-handed
  • Typical ball flight: Mid launch
  • Golf ball used: Taylormade TP5x, Titleist ProV1x
  • Club swing speed: 95 mph

Test conditions

  • When I bought the club: Spring 2020
  • Days tested: I played the club for one year, or about 50 rounds
  • Where I’ve used it: At the range and on the course in Arizona and North Carolina
  • Weather and wind conditions: In the desert climate of Arizona, and the rainy, spring season on luscious rough and soft ground in North Carolina

How it performs

Distance
5/5
Feel
5/5
Forgiveness
5/5
Sound
4/5
Launch
3/5
Workability
3/5

What I was looking for

When I bought this club, I was searching for a long iron that is forgiving and has a hot feel off the face. I needed a forgiving club that did not compromise distance and consistency.

Why I chose this club

I decided to buy this club because of its hot feel off the face at contact and its consistency. Its length and forgiveness really sold me along with the fact that the Hot Metal Pro has less offset than its forged counterpart. I considered a Callaway Apex and Taylormade Sim long iron. In the end, I decided to pick the JPX 919 Hot Metal Pro due to the fact that it had minimal offset and I was able to hit the distance I needed with it.

What I love about it

  • Distance: The JPX 919 is a very forgiving long iron. The slim body offers great ball speed at impact which maximizes distance with every shot. I wanted a 3 iron that would hit 230 yards, which is exactly what this club hit for me. With the callaway Apex I was considering, I was unable to get more than 220 on a solid swing.
  • Forgiveness: The forgiveness offered in the Hot Metal Pro is off the charts. The slim body compared to the Hot Metal really helps with each shot. Hitting it thin shows a mid trajectory that will still allow the ball to travel; small mishits only lose about 10 yards of carry with a strong trajectory.
  • Feel: The feel is strong at impact and very hot off the face. This really helps with being consistent and confident off the tee on those long par 3s.
  • Aesthetic Appeal: I like the slim club head look compared to the standard Hot Metal. It is bulkier than a forged iron, but I did appreciate the medium slim look.
  • Grip Feel: I changed out the stock grip to the Golf Pride MCC Plus4 tour velvet helps me with consistent grip placement.

Issues I’ve encountered

  • Sound: The impact is really loud. It sounds more dull and clanky versus a very solid, clicky noise at contact.
  • Workability: This is not the most workable iron. Because with the minimal offset there is a little room for a small draw or fade.
  • Adjustability: There are no adjustments that can be made and the club has minimal offset.
  • Shaft Performance: The True Temper 105 steel stiff was just a little light for me. This was the stock shaft on the club when I bought it, and I prefer a stiff 120 grams for my swing speed.
  • Launch Angle: This club has a very strong trajectory at impact and favors a mid to high launch. I preferred a lower launch for my long iron because I want low spin and more roll for maximizing my distance on par 4s.
  • Spin:I generated low spin on this club, which allowed more roll and longer total distance.

Best shot with this club

At Quintero Golf Club in Arizona, I was approaching a short par 5 on a very tight and narrow course. It was a dog leg right, and I cut the corner perfectly. I had about 225 yards left to get on the green in two with a very narrow shot to a green surrounded by bunkers. I was able to hit a beautiful 3 iron with a baby draw that rolled up on the green for a 15 foot eagle putt. Unfortunately, I missed the putt, but the iron shot gave me an easy two-putt birdie.

Value for the money vs. other options

Mizuno is typically priced a little more expensive or just at the same price as the Taylormade Sim long irons or the Callaway Apex long iron. I would pay the extra money for the JPX 919, as it is a more forgiving long iron and maximizes distance. For me, the feel at impact was a big improvement over the Taylormade and Callaway options.

Final verdict

This is a very powerful long iron that is far and forgiving for all advanced players looking for a consistent club to reach long par 3s and par 5s.

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