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Mizuno JPX-900 Hot Metal and JPX-900 Forged irons

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Along with the company’s new JPX-900 Tour irons, Mizuno will also launch its new JPX-900 Hot Metal and JPX-900 Forged irons, which will replace the JPX-850 and JPX-850 Forged irons.

Unlike Mizuno’s MP irons, which are blade and blade-like irons designed for better players, the JPX line of irons are designed to offer golfers more forgiveness and distance, packaged into slightly larger head sizes. Think of them as “tweener irons,” according to David Llewellyn, Mizuno’s Director of R&D.

As is expected from the JPX line, the new crop of JPX-900 Forged and Hot Metal irons focuses on playability and distance, but doesn’t ignore feel and sound in the design process. To accomplish the feat, each of the new offerings use special materials. The JPX-900 Forged irons are made with a special 1025E Grain Flow Forged steel that is infused with boron. The JPX-900 Hot Metal irons are cast from a metal called Chromoly 4140M, which you can learn more about below.

JPX-900 Forged irons

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Along with being larger than Mizuno’s new JPX-900 Tour irons, the JPX-900 Forged irons have a chemical trick up their sleeves to offer greater forgiveness and more distance — a material called boron.

The company began using boron with its JPX-850 Forged irons, although two years after their release there is still lingering confusion among golfers as to how and why boron is actually used. Contrary to popular belief, boron is not used as a replacement for traditional steel in the design. Rather, a small amount of boron (30 parts per million, according to Mizuno) is mixed with the company’s Grain Flow Flowed 1025E steel to increase strength. This allows Mizuno to forge the faces of boron-infused thinner, leading to faster ball speeds without sacrificing durability.

Mizuno started experimenting with boron after seeing its success in the auto industry, where the material helped create auto parts with a higher strength-to-weight ratio to make stronger, more more fuel-efficient structures. Mizuno found that it translated well into iron making, helping them offer better distance and consistency. The difficult part about using boron, according to Llewelyn, was getting the mixture right so that the company’s irons would maintain their signature sound and feel.

“It took 5 years to figure out how to do it,” Llewelyn said.

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The JPX-900 Forged irons, therefore, are the second-generation of JPX irons to use boron. To make the irons longer and more forgiving than their predecessors, Mizuno reshaped the pocket cavity of the irons to create a larger rebound area, giving them faster ball speeds on off-center hits.

Head sizing throughout the set has also changed; the longer irons have a longer blade length, while the shorter irons have a more compact look, with the “crossover” being at the 6-iron.

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The JPX-900 Forged ($1200) come stock with True Temper’s Project X LZ shaft, and will hit stores Sept. 16.

JPX-900 Hot Metal irons

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In the new age of iron design, companies search for ways to make the faces thinner in order to produce faster, more consistent ball speeds. That’s how Mizuno stumbled upon 4140M Chromoly, a common scientific name for the mixture of chromium and molybdenum. Mizuno found that the material, which is used in aircraft tubing, firearm parts, bicycle frames and race car roll cages, had a two-fold benefit in iron design.

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The way Mizuno heat treats the Chromoly allows the irons to be built with thinner and stronger faces, while still maintaining their bendable, loft-and-lie adjustable hosels. If you’ve equipment articles on GolfWRX in the past few years, we’re quite keen on the benefits of custom-fitting when making a club purchase, so this puts a smile on our face.

The Hot Metal irons also have a “cup face,” which makes the faces thinner and more flexible. What’s unique about Mizuno’s cup-face design is that it is created without the usual face weld. That works to raise coefficient of restitution (COR) to 0.828, according to Mizuno, just shy of the USGA’s legal limit.

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The JPX-900 irons are also equipped with a triple-cut sole for better turf interaction from a variety of lies and “sound ribs” behind the top cavity for improved acoustics. The ribs are similar to what are used in metal woods, where they quiet the vibrations to improve the feel of the hollow, thin-faced clubs.

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For golfers who prefer to purchase wedges that match their irons, Mizuno redesigned the JPX-900 Hot Metal wedges to maximize performance around their greens. The set’s gap, sand and lob wedges are made from X30 Stainless Steel — a soft and bendable material, according to Mizuno — with head shapes that are inspired by the company’s S5 wedges. Like Mizuno’s premium S5 and T7 wedges, the Hot metal uses the company’s Quad-Cut grooves for improve spin control, and the sole grinds are progressively shaped to suit the respective purposes of each loft.

Related: Click to See photos of Mizuno’s new wedges

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JPX-900 Hot Metal sets (4-PW, GW) will come stock with Nippon N.S. Pro Modus3 Tour 105 steel shafts, and will hit stores on Sept. 16 for $900.

Related: See what GolfWRX members are saying about the clubs in our forums

He played on the Hawaii Pacific University Men's Golf team and earned a Masters degree in Communications. He also played college golf at Rutgers University, where he graduated with a Bachelor of Arts in Journalism.

29 Comments

29 Comments

  1. RAT

    Sep 15, 2016 at 8:10 pm

    I LIKE THE LOOKS AND WOULD CONSIDER BUYING THEM . BUT THE PRICE IS TOO HIGH !! THAT’S THE PROBLEM WITH GOLF IT’S NOT REASONABLE PRICED !! THE FEWER THAT PLAY, THE COST GOES UP.THAT’S NOT THE WAY TO BRING IN NEW GOLFERS. DROP THE PRICE OF EQUIPMENT ,PLEASE,PLEASE… YOU WILL SEE MORE GETTING INTO GOLF. IT COST TOO MUCH!!!!!

  2. Dutzow

    Aug 30, 2016 at 2:05 am

    Have the callway x2hots which I really enjoy. I don’t love the look however, and most of their recent offerings have looked even worse. Really enjoy the look of these though! Glad someone made an iron that wasn’t obnoxious!!

  3. Bert

    Aug 19, 2016 at 7:49 pm

    Development may create costs but excessive cost create loss of sales. The industry needs a better price point. I just passed on Callaway Apex irons, yes like I them, but just can’t justify the extra cost for a “distance” change.

  4. mr b

    Aug 18, 2016 at 12:09 pm

    did someone from mizuno beat your a$$ or something? you sure do have an inferiority complex for them

    • mr b

      Aug 18, 2016 at 4:16 pm

      same here. inferiority complex it is.

      • 5kywalker

        Aug 19, 2016 at 1:46 am

        Smizzle, you seem to be the only one here with such a harsh view on these clubs. In essence, you just sound mental.

        So please pipe down whilst the adults talk.

        There’s a good lad.

  5. Brian

    Aug 17, 2016 at 1:53 pm

    You have to be the least capable internet troll I’ve ever run across.

    • Mark Walgren

      Aug 22, 2016 at 2:07 am

      Oh come on. A very bold statement such as your original comment is bait. Explain yourself. Why do you say they steal so much?

      • Nolanski

        Aug 22, 2016 at 12:31 pm

        He’s been trolling hard for awhile now. Its best to just ignore him.

  6. James Bond

    Aug 17, 2016 at 9:17 am

    Just stop.

  7. Uncle Buck

    Aug 17, 2016 at 4:24 am

    Chromoly?? In the 70’s I had a bmx bike frame made of that! Next we’ll be wearing Angels Flight golf clothing and platform Farmalari’s!!

  8. Pub

    Aug 17, 2016 at 3:20 am

    You didn’t. Nobody cares what you say, you’re just a pathetic varmint

  9. KK

    Aug 16, 2016 at 11:21 pm

    Seems like great tech but I’m not sure anyone can match what Titleist has done with AP2, T-Mb and C16.

  10. Leon

    Aug 16, 2016 at 7:24 pm

    Nothing particular innovative here. Just appearance change and minor tuning. The JPX 800 and 850 are all have 0.83 COR already, so no distance increase at all.

    The only good part is the stock Project LZ shafts, which are better shafts than the crap DG S300, but they add the up charge into the total price. $1200 for a new set? Give me a break (it was $799, then $899, then $999, and now we have $1200, good for everybody)

    • Tom

      Aug 16, 2016 at 11:23 pm

      “Mizuno started experimenting with boron after seeing its success in the auto industry, where the material helped create auto parts with a higher strength-to-weight ratio to make stronger, more more fuel-efficient structures. Mizuno found that it translated well into iron making, helping them offer better distance and consistency. The difficult part about using boron, according to Llewelyn, was getting the mixture right so that the company’s irons would maintain their signature sound and feel.” That type of research and technology cost’s money.

      • Leon

        Aug 17, 2016 at 10:55 am

        The “boron” thing is more like minor tuning. The JPX 800 and later 850 (not pro version) cast steel iron have all reached the 0.83 COR upper limit with “ultra thin face”. The boron may make the face thinner but the elasticity is constrained to the 0.83 limit, so whether the face is thinner or thicker, as long as the COR is 0.83, the overall distance will be pretty much the same, no matter what materials they are using.

        I like Mizuno’s club and am playing the MP 69 blades. The new irons look good, but performance wise, as long as you have been properly fitted, there is really no difference between newer or elder models.

    • Pub

      Aug 17, 2016 at 3:17 am

      They’re only matching everybody else’s prices. Not a big deal. It’s the state of things now.

    • doesnotno

      Aug 17, 2016 at 8:43 am

      “the crap DG S300”

      Yup, there’s a shaft that will never catch on.

    • Brian

      Aug 17, 2016 at 1:52 pm

      Too bad the DG S300 wasn’t the stock shaft in the 850s.

  11. Justin

    Aug 16, 2016 at 5:55 pm

    Is it just me or is does the new price for a set of irons seem to be around $1,200??? $999 was bad enough but now it’ll cost the average golfer about $2,640 for a full set excluding putter ($1200 irons, $500 driver, $300 3-wood, $250 hybrid, $130 wedge x3). I guess very few people go out and buy brand new everything all at once, but this pricing seems more and more outrageous each year.

    • Pub

      Aug 17, 2016 at 3:19 am

      Yeah it’s because they’re all offering so many kinds of shafts included in the price now, unlike 2 years ago when most of those were all uncharged to this price from the basic shaft option price. We’ve come a long way in getting so many shafts included in the one price

  12. Steve

    Aug 16, 2016 at 4:10 pm

    Looks like the OEM’s are catching onto Hi-COR irons like Wishon did years ago.

  13. golfraven

    Aug 16, 2016 at 3:21 pm

    Mizuno are building some great looking sets in recent seasons – worth considering.

  14. Tom

    Aug 16, 2016 at 1:33 pm

    chromoly I like the sound of that. Sir 138 carries..you have 145 to the center ….Hand me my chromoly 9 iron……

  15. Ryan

    Aug 16, 2016 at 1:18 pm

    Does this mean that Mizuno will no longer offer no up charge custom shafts? That was a big selling point for them this year.

    • Brian

      Aug 16, 2016 at 3:06 pm

      It seems that they’re hiding the upcharge in the base price

      • Chris

        Aug 16, 2016 at 6:28 pm

        Right. Still no upcharge shafts, but they included Recoil Graphite in at $900 as well as the steel prices so no more Orochi. It’s Recoil and PX Loading Zone for graphite. Chromoly’s are stupid long, too.

      • sumsum

        Aug 17, 2016 at 7:37 am

        Except they were the first to offer no upcharge shafts, so they aren’t baking it into the price, this is just the market now. At least Mizuno technology is reflective of actual innovative work that takes time and resources to develop new constructions and usage, like chromoly and boron. Development creates cost.

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Equipment

Tour Edge unveils all-new Exotics mini driver

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Tour Edge Golf has today introduced the all-new Exotics mini driver, engineered to deliver a powerful combination of speed, control, and versatility in the long game. 

The Exotics Mini combines a titanium face with a stainless-steel body in design to balance ball speed with stability and control, creating a versatile option at the top end of the bag. 

At the core of the design is Tour Edge’s proprietary Combo Brazing technology, a high-precision thermal bonding process that seamlessly fuses a titanium cup face to a stainless-steel body into a single, continuous structure. By eliminating energy loss found in traditional multi-piece constructions, Combo Brazing is designed to deliver faster face response, more efficient energy transfer, and a uniquely powerful yet controlled feel.

The multi-material construction also allows mass to be positioned lower and deeper in the head in a bid to increase stability, while the thin titanium face is engineered to maintain ball speed across a wider impact area.

“While the initial goal was to enhance control and versatility in the long game, Combo Brazing ultimately drove measurable gains in ball speed and distance within the mini driver category. In robot testing, we’ve documented higher ball speeds, higher launch, reduced spin, and increased carry and total distance compared to leading models.” – Vice President of R&D Matt Neeley

In addition to distance performance, the Exotics mini emphasizes forgiveness through a heavier stainless-steel body that shifts mass toward the perimeter. This configuration increases MOI relative to traditional all-titanium mini drivers, helping preserve ball speed and directional stability on off-center strikes. Paired with Pyramid Face Technology from the Exotics metalwood line, the design is intended to support consistent speed across the face.

To further enhance MOI, a lightweight carbon fiber crown frees additional mass that is strategically repositioned low and deep in the head in design to improve stability and promote optimal launch with controlled spin.

“We designed the Mini to be about five millimeters shallower than other mini drivers on the market. That change improves playability off the deck. From a clean fairway lie, it can function as a strong 3-wood alternative while still providing control off the tee.” – Tour Edge CEO David Glod

An adjustable hosel system allows for loft and lie tuning to dial in trajectory and shot shape, while a fixed 13-gram rear weight helps stabilize the head through impact to improve dispersion consistency. The Exotics Mini Driver is available in 11.5 and 13.5-degree lofts in right-handed models.

Pricing & Availability

The Exotics Mini Driver is available for pre-order beginning today for $399.99 USD at touredge.com, and will be available for purchase at retail outlets worldwide on May 22, 2026. 

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Equipment

Srixon ZXi combo or TaylorMade P7CB/770 combo? – GolfWRXers discuss

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In our forums, our members have been pitting a Srixon ZXi combo against a TaylorMade P7CB/770 combo. WRXer ‘edutch22’ is on the hunt for a new set of irons and kicks off the thread saying:

“Looking at picking up a new set of irons and think I’ve narrowed it down to Srixon ZXi combo or Taylormade P7CB/770 combo. I am currently a 5 cap and allbeit I feel irons are my weakness. My miss is a little to the toe side. I am decently steep at 4-5 down. Always thought I am high spin but recently on trackman my 7 was spinning at 5800 roughly. 

My question or looking for thoughts on which one would benefit me more from a forgiveness standpoint? Or is there another iron is should be looking at entirely? I only get to play about once or twice a week, if I am not playing a 2-3 day event. Thanks in advance.”

And our members have been sharing their thoughts and suggestions in response.

Here are a few posts from the thread, but make sure to check out the entire discussion and have your say at the link below.

  • manima1: “You just can’t go wrong with Srixon ZXi7.”
  • MattM97: “You have to hit them to know, the V-Sole on the Srixon can be make or break for many.”
  • dmeeksDC: “P7CB is more forgiving for me than ZXi7 because my main miss is low middle and the P7CB still flies and spins great on that miss. These are both really nice irons but I like the P7CB more than the Zxi7 and the P770 (or P790) more than the Zxi5. The Srixons are larger so if that gives you confidence that is the way to go. I don’t feel like I get any benefit from the V-sole and the P7CBs live up to their high Maltby forgiveness rating so the TaylorMades have been great for me.”

Entire Thread: “Srixon ZXi combo or TaylorMade P7CB/770 combo? – GolfWRXers discuss”

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Equipment

From the GolfWRX Classifieds: 2024 Wilson Staff CB/Blade combo

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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, @pianoman0123 has a 2024 Wilson Staff CB/Blade combo up for grabs.

From the listing: “2024 Wilson Staff CB/Blade Combo.  4-8 irons are CB’s and the 9,PW are Blades.  5-PW have Project X 6.0 Shafts and the 4 Iron has a Steelfiber CW110 Stiff Shaft.   Standard Length, Lie and Lofts.  These are in very good condition the shafts just don’t work for me.  Like new Lamkin Grips on the 5-PW and a stock Golf Pride on the 4 Iron. $525 OBO.”

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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