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In-hand look: New Mizuno JPX 919 Hot Metal Pro irons

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Building off of the massive success of the totally revamped JPX series over the last three years, including a couple major victories with the JPX 900 Tour model, Mizuno is expanding the JPX options and again blurring the line between game improvement and players clubs with the introduction of the highly anticipated JPX 919 Hot Metal Pro.

What gets lost in the discussion with Mizuno and the JPX line is the original Hot Metal 900 was the best-selling iron for Mizuno in the 900 line up by quite a large margin and helped take back some relatively big market share from other OEMs in the category. When you take into account that for the majority of recreational (and even avid golfers) breaking 100 is a challenge, it’s easy to see how game improvement clubs make up the majority of on course and fitting studio sales. For a brand like Mizuno so closely associated with the PGA Tour and lower handicap players, that was a big step forward in consumer perception.

The JPX 919 Hot Metal Pro fits into the lineup for the aspiring player looking for both ball speed and an enhanced appearance from the top line. From first impression alongside my MP 18 blade, its easy to see how this club could find its way into the hands of even the most ascetically picky golfer.

The technology story comes from the combining of all the technology from the JPX 919 Hot Metal line including

  • Proprietary chromoly 4140M to increase face strength, flex, & speed – while still allow for lie loft adjustments
  • One Piece cupped geometry for improved feedback
  • Re-engineered ribs in the cavity to improve acoustics
  • Stability frame undercut to push mass to the furthest perimeters for maximum forgiveness

…all this now in a profile typically only seen in a “players cavity iron”

From a technical and fitting standpoint, the specs of the JPX 919 Hot Metal Pros are an exact match to the standard 919 Hot Metals (in regards to the lies and lofts). This makes it the perfect club to either combo into the short irons or, for those looking to add some forgiveness into the longer irons by combo-ing with either the forged of tour models in the shorter irons. This transition will be equally easy since the offset is inline to the offset numbers with the JPX 919 Tour’s. See more photos and discussion in the forums

Comparison between JPX 919 Hot Metal and 919 Hot Metal Pro

Comparison between JPX 919 Hot Metal and 919 Hot Metal Pro

Comparison between JPX 919 Hot Metal and 919 Hot Metal Pro

The best way to describe the target golfer for this is either a better player with moderate clubhead speed that needs more ball speed and higher launch to help hold more greens, the aspiring mid-handicapper looking to move into an iron that has a “players” profile while still offering forgiveness, or the golfer looking to combo a long iron replacement to compliment the rest of their set.

Even into the shorter irons, the Hot Metal Pros are a sight to been seen. Obviously, there is no mistaking this club for a pure blade, but you will be hard pressed to find a pitching wedge packed with this much technology in a shape that is both confidence inspiring and player preferred. There is also a matching 50-degree gap wedge to match the set and make the transition to traditional wedges easier.

Join the discussion in the forums. 

 

Ryan Barath is a club-fitter & master club builder with more than 17 years of experience working with golfers of all skill levels, including PGA Tour players. He is the former Build Shop Manager & Social Media Coordinator for Modern Golf. He now works independently from his home shop and is a member of advisory panels to a select number of golf equipment manufacturers. You can find Ryan on Twitter and Instagram where he's always willing to chat golf, and share his passion for club building, course architecture and wedge grinding.

15 Comments

15 Comments

  1. Pelle

    Feb 18, 2019 at 4:57 am

    Mizuno, why aren’t you building Hot Metal PRO in left handed version? Why do you abandon us lefties, again?

  2. Tiger Noods

    Feb 6, 2019 at 3:01 am

    What is “ascetically picky”?

  3. www.dermatologistmumbai.com

    Jan 25, 2019 at 7:24 am

    Excellent post! We will be linking to this particularly great article on our site.

    Keep up the good writing.

  4. Jim Farrell

    Jan 23, 2019 at 8:13 pm

    What are the specs? Not enough information to be able to determine anything. Mizuno’s web site is pathetic.

  5. scotty

    Jan 23, 2019 at 2:00 pm

    editing is important before publishing.

  6. Miles

    Jan 22, 2019 at 9:37 pm

    I have been playing the MPH4s since they were released and haven’t found anything that could replace them. Curious to see how these will stack up against my trusty H4s…

  7. John

    Jan 22, 2019 at 12:09 pm

    Left hand availability?

  8. Jerry G

    Jan 22, 2019 at 10:45 am

    Looks good at address with help in the sole – I see HM Pro 4i with the 919F.

  9. stan mccoy

    Jan 22, 2019 at 10:38 am

    when will they be out

  10. Jordan

    Jan 22, 2019 at 10:35 am

    So the only question I have after this is, should I paint fill my MP-18’s with the black instead of white?

  11. Pelle

    Jan 22, 2019 at 9:59 am

    Wow, Mizuno has really hit my sweet spot – again as it seems. I am really looking forward to try and most probably by them.

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Equipment

Neal Shipley, AKA, the “Big Fridge’s,” custom stamping

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Neal Shipley was the first to admit that he enjoyed his food while in college. But since his days at Ohio State, he’s slimmed down and earned a PGA Tour Card.

That hasn’t stopped him from having fun with his wedge stampings, though it’s led to some misunderstandings.

On the 54 (degree), we have ‘Big Fudge,'” Shipley told GolfWRX. “It was supposed to be ‘Big Fridge,’ so this happened a little while ago. ‘Big Fridge’ was a nickname between my college teammates and I, with ‘fridge’ meaning stomach, a big stomach.

“We told the Ping guys to put … ‘Big Fridge’ on it, and I think maybe some bad cell service or something, and they thought I said ‘fudge,’ so they put fudge on it.”

On Shipley’s 50-degree he also continues the food theme, this time with his go-to order at the “Golden Arches,” and his stamping “DONS 7.”

“The number 7 meal, the two cheeseburger meal, that was my McDonald’s order, back when I would have McDonald’s frequently,” Shipley shared.

Check out Shipley’s full what’s in the bag and the rest of his wedge stampings here on “Inside the Ropes” from Colonial.

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Equipment

From the GolfWRX Classifieds: L.A.B. Purple DF3 with Masters cover

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At GolfWRX, we are a community of like-minded individuals who all experience and express our enjoyment of the game in many ways.

It’s that sense of community that drives day-to-day interactions in the forums on topics that range from best driver to what marker you use to mark your ball. It even allows us to share another thing we all love – buying and selling equipment.

Currently, in our GolfWRX buy/sell/trade (BST) forum, @raw10628 has a L.A.B. DF3 putter and Masters putter cover up for grabs.

From the listing: “Some great items here today, time to thin out and make room for next set of gear.  All prices include shipping. 
LAB DF3 Purple 33.5” 68° lie with TPT – $725. LAB Masters release DF3 cover – $150.

To check out the full listing in our BST forum, head through the link. If you are curious about the rules to participate in the BST Forum, you can learn more here: GolfWRX BST Rules

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Whats in the Bag

Maria Torres WITB 2026 (June)

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Driver: Ping G440 LST (9 degrees)
Shaft: Accra TourZ Green 5-M4

3-wood: Ping G440 Max (15 degrees)
Shaft: Accra TourZ Green 6-M4

5-wood: Ping G440 Max (19 degrees @18)
Shaft: Accra TourZ Green 6-M4

Hybrid: Ping G440 (23 degrees)
Shaft: Oban Isawa Red Hybrid Shaft 04 Flex 70 Gms

Irons: Srixon ZXi7 (5-P)
Shafts: Aerotech SteelFiber Private Reserve i80

Wedges: Cleveland RTZ (50-MID, 54-FULL, 58-MID)
Shafts: Aerotech SteelFiber Private Reserve i105

Putter: L.A.B. Golf OZ.1i
Shaft: ACCRA Putter Shaft

Grips: Golf Pride Tour Velvet

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