Equipment

Mizuno JPX-850 Forged and JPX-850 irons

Published

10 years ago

Aug 12, 2014

Mizuno’s MP line is for the “better player” and the JPX EZ line is for the high-handicapper, but what about the 7-25 handicap that represents the majority of global golfers? The JPX-850 Forged and JPX-850 irons cater to the average golfer.

While the MP irons are made for the purist searching for the flowing forged look and feel of a players’ iron, the JPX line is made for speed, futurity and something unexpected, according to Chuck Couch, Vice President of Product Management at Mizuno.

Mizuno seems to have accomplished its goal with the two new lines of JPX irons.

The JPX 850 Forged irons moved away from the 1025E forging that has become the calling card of Mizuno irons. Instead, they were forged from 1025 Boron, which is a stronger material allowing the iron faces to be forged thinner for more distance and forgiveness. Also, both of the JPX 850 irons utilize “Power Frame Technology,” creating a larger sweet spot without making the club heads any bigger than their predecessors.

Click here to see more photos and read the discussion in the forums

JPX-850 Forged

[youtube id=”pWPFoZwa8fA” width=”620″ height=”360″]

The JPX 850 Forged irons are set to replace the JPX-825 Pro irons that were forged from 1025E. Although the JPX 850 Forged irons are still made using the Grain Flow forging process that enhances look and feel, they are forged from 1025 Boron. Mizuno is the only company to use that element in its forging process.

2015 mizuno jpx forged irons

“Boron is 30 percent stronger, so we were able to forge the face much thinner, which raised the COR to .800,” said Couch. “That’s a higher COR than any of our competitors.”

COR, which stands for Coefficient of Restitution, is a measure of energy transfer between the club head and the golf ball at impact. A higher COR means more energy is transferred, which produces greater distance and consistency. This was accomplished by maximizing the use of discretionary weight from the milling process.

mizuno jpx 850 forged

Since the faces were able to be forged thinner, Mizuno was able to take out 5 grams from the face, and an additional 21 grams from the pocket cavity during the milling process. This allowed for 26 grams to be placed into the perimeter of the iron away from the center of the face, creating “Power Frame Technology,” which increases distance and forgiveness.

The strategically placed discretionary weight allowed Mizuno to match the exact size of the 825-Pro, with a 6 iron that measures 79 millimeters in size, and replicate the same feel and sound, which was confirmed since the company uses Modal Analysis to measure frequency, pitch and decibels.

JPX-850 Forged irons have a Triple-Cut Sole, which adds versatility and maneuverability, and the heads are nickel-chrome plated. (click to enlarge photo)

The JPX-850 Forged irons will be available for retail purchase on Sept. 19, 2014 for $999 with a steel shaft, and $1099 for graphite, for both right and left-handed players. The irons come in a stock set of 4-GW with a True Temper XP 115 shaft, but the customer can switch out any shaft for no up-charge. That means the JPX-850 Forged irons are $999 in steel, no matter what steel shaft you choose, and $1099 for graphite, no matter what graphite shaft you choose.

Click here to see more photos and read the discussion in the forums

JPX-850 irons

[youtube id=”XL9xS-Q9YdM” width=”620″ height=”360″]

The JPX-850 irons are cast, so they do have a higher COR than the JPX-850 Forged irons, which means more energy transfer and more distance. They also have thinner and hotter faces than the JPX-825’s they replace.

“We pushed up against the legal limit with the JPX-850 irons, which have a .830 COR,” Couch said. “This produces a very hot ball speed off the face.”

For the 850’s, Mizuno placed discretionary weight from the milled cavity away from the center of the face to develop the “Power Frame Technology,” much like they did in the 850 Forged design. The JPX-850 forged 6 iron measures 79 millimeters in size, however, while the JPX-850 6 iron measures a larger 86 millimeters in size, which allows for a bigger sweet area on the face, producing the higher COR.

Therefore, while the JPX-850 Forged irons blend distance and forgiveness with the Grain Flow forged feel, the JPX 850 irons maximize distance and forgiveness for the player looking for added consistency.

The JPX-850 irons are cast using 17-4 Stainless Steel.

The irons have the familiar blue badging that matches the JPX-850 wood line, but it’s not just for show. The blue badge in the iron’s cavity is made from TPU (Thermoplastic Polyurethane) and aluminum, which helps achieve the proper sound and feel Mizuno strives for.

[quote_box_center]”It is a great transparent and cool-looking badge, but serves the purpose of being acoustically tuned so that we achieve the sound/feel that we are desiring,” Couch said. “This science is called Modal Analysis. We not only pioneered it, but now we can tweak it so that the sound/feel are very pleasing for the player.”[/quote_box_center]

Click here to see more photos and read the discussion in the forums

The JPX-850 irons have “an aggressive Dual Relief Sole,” according to Couch.

Also available for retail on Sept. 19, 2014, the JPX-850 irons (4-GW) will sell for $799 with the steel shaft of your choice, and $899 for the graphite shaft of your choice, for both left and right-handed players. The stock shaft is a True Temper XP 105.

Click here to see more photos and read the discussion in the forums

Click here to see more photos and read the discussion in the forums

Click here to see what GolfWRX members are saying about the new line of JPX-850 irons.

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Review: Game Golf

Andrew Tursky

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.

42 Comments

Garry K

Jul 29, 2015 at 7:51 pm

Folks,
I play the older Mizuno MX25’s and love them
Need the forgiveness they provide however.. And at 60 yrs play around a14 handicap..
What is the Mizuno replacement / equivalent ..???
Significantly confused between the forged and cast 850’s
Am attracted to the forged but the offset of say 0.15 for the 5 iron v’s 0.21 for myMX25’s has me worried,,
Can anyone advise??
Garry

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Jim

Dec 19, 2014 at 3:19 pm

Who cares what it looks like if you score with it?

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Robert

Sep 1, 2014 at 9:31 pm

I like them both alot to be honest. A vast improvement and step back in the right direction from the hideous JPX-EZ lineup. Wow that dark finish was ugly and had no durability while the orange badging really solidified the putrid package. I usually don’t like voicing a negative opinion, but being they have moved on from that look I feel like they agree that it wasn’t their best effort. The new 850 stuff looks modern and muscular like alot of other late model irons. Of course the regular 850’s are a bit bulky, but they’re not intended for scratch golfers that prefer no offset and razor thin toplines. I think mid and hi cappers are gonna really enjoy these. The Mizuno blue has always been an attractive color scheme in my opinion. As for the new “Boron” forged version, again I’m a fan. A nice forgiving long forged offering for the guy that can’t quite play a blade. I love the developement of this genre of irons to be honest. Not a shovel, not a blade, but a great feeling forged iron that isn’t intimidating to look down at and offers workability as well as length and forgiveness. What more could you want. My Covert Forged 2.0’s sure are fun and I bet these will be too. Congrats Mizzy.

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Joe v

Aug 29, 2014 at 12:52 pm

Just finished a fitting for these in Ct. I ordered the 850 cast with C taper lite. No up charge . Brought the ball flight down a bit and tightened up dispersion. 13 hdcp so I wasn’t getting forged. Almost a club longer and very forgiving. You can still work the ball with these irons also. And the setup to the ball nicely, not big and clunky.They ship out Sept 8th I think and look forward to playing them

Reply Report comment
- Susinto
  
  Sep 13, 2014 at 12:26 am
  
  How was the iron?
  
  Reply Report comment
  - Joe v
    
    Sep 14, 2014 at 7:30 pm
    
    I didn’t get them yet but hit the demo well. Solid feel. set up nice to the ball. Longer than old irons. Vey forgiving but don’t look like a game improvement iron
    
    Reply Report comment
- Brian
  
  Apr 26, 2016 at 2:11 pm
  
  No reason for a 13 to not play a forged, depending on your weakness. I play to a 16 or so and I play an MP iron. My weakness is getting off the tee (fighting a snap hook) and short game.
  
  Reply Report comment
Chris

Aug 26, 2014 at 8:57 pm

Probably still hating on lefties….

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- Chris
  
  Aug 27, 2014 at 9:24 pm
  
  I take it back, even the forged pro’s are available lefty!
  
  Reply Report comment
- Bwoody01
  
  Sep 24, 2014 at 9:11 am
  
  Both 850s available in left hand! The new driver will be available in left hand as well when released. I guess they finally listened to all the complaining. No surcharge either on ‘other’ shaft options!!!!
  
  Reply Report comment
bruce

Aug 25, 2014 at 2:41 pm

Please confirm lofts/ lengths of the 850 pro

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SoonerChief

Aug 22, 2014 at 10:45 pm

My pro shop just got these and I hit them this afternoon. The JPX 850 Pro is AWESOME! The feel is fantastic and soft. The forgivability is great too. Mishits still got out there and were straight. I was able to hit high shots, low shots, draws and fades at will. The ball comes off like a rocket. I’m trading in my MP-69’s for these baby’s soon!

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Curt

Aug 19, 2014 at 11:14 pm

I like them. Pushing technology to the max. …………… How hard is it to get a job with one of the big companies that would be awesome? Anyone?

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RAT

Aug 13, 2014 at 9:47 pm

wow , forged looks great. drop the price some please..

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GGWolverine

Aug 13, 2014 at 4:50 pm

I’m definitely interested in the Mizuno JPX 850 forged when they come out. I hate the looks of the ez line w/ that gross orange color. Does anyone know if there offering the UST Recoil 95 or Steelfibers?

Reply Report comment
- Jason W
  
  Aug 14, 2014 at 9:40 am
  
  UST Recoil shafts are garbage, I LOVE the new fad with these, and Steel fiber as well… what like 2-4 guys on tour use them….. oh yeah but they’re a GREAT shaft though… (sarcasm). Honestly Aerotech and UST have been greasing peoples pockets with LARGE spiffs to sell these shafts I know because I work in retail for golf as a fitter when in reality they are a joke. THESE SHAFTS ARE A JOKE … Unless you have a some CRAZY injury and need some help on impact, or you like throwing away 40$ per club to look cool
  
  Reply Report comment
  - John
    
    Aug 22, 2014 at 2:29 pm
    
    obvious troll is obvious.
    
    Reply Report comment
  - Phil
    
    Sep 19, 2014 at 11:03 am
    
    People who think they are superior, seldom are.
    
    Reply Report comment
Jake Anderson

Aug 13, 2014 at 4:41 am

dont like the look.

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BS

Aug 13, 2014 at 2:39 am

850! Boron! I’m sold! That’s my next set!

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- BS
  
  Aug 13, 2014 at 2:40 am
  
  I hope they feel as soft as before.
  
  Reply Report comment
Nathan

Aug 12, 2014 at 8:27 pm

Nice! Real Nice, especially the no upcharge!
I have been with 825pro’s for about two years.
love em
but ready to upgrade, unfortunately more forgiveness isnt an upgrade for me. So looks like i miss out. Mp 54 for me

Reply Report comment
- NotSoPro
  
  Aug 13, 2014 at 11:23 am
  
  MP54 is pretty forgiving the last time I checked…
  
  Reply Report comment
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Titus

Aug 12, 2014 at 4:56 pm

Wow are they really offering the lefty version of JPX850 pro? The lefty version was not available in the previous models!

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- MGX
  
  Aug 12, 2014 at 9:54 pm
  
  Thank the lord!
  
  Reply Report comment
- Phil
  
  Sep 19, 2014 at 11:04 am
  
  Lefties play golf? 🙂
  
  Reply Report comment
Zdenek

Aug 12, 2014 at 4:30 pm

A) if EZs are for high-hcp ->EZ Froged are more forgiving than 850 cast irons???So the most forg. EZ then EZ Forged ->850 ->850 PRO?
B)What about new JPX Wedges to much with 850 and Fli-Hi hybrids?

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jgpl001

Aug 12, 2014 at 4:09 pm

The pro version looks a little busy, but I am sure is a good solid iron

The 850 iron looks terrible – fat, chunky, awkward, and that sole looks wide enough to land an F-16. Still I am sure it’s a solid iron, Mizuno rarely make a bad one

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DaveMac

Aug 12, 2014 at 3:45 pm

Top line looks a little wrong on both models, the 850 pro looks more like the old 800 rather than the 825 pro at address. They might look a little better in the flesh, I certainly hope so.

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Mason

Aug 12, 2014 at 2:03 pm

Any idea when these will be available to demo?

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Donald Chatman

Aug 12, 2014 at 2:00 pm

Would like to know what shafts are available for JPX50 forged,stock or otherwise.Will nspro 950 or any lightweight steel shaft be stock and/or available?

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- Jason W
  
  Aug 12, 2014 at 2:14 pm
  
  They still have their xp series light weight as well as their nippon series light weight from what I’m told, and yes at no upcharge as well. New light weight would be the ctaper lt
  
  Reply Report comment
Chris

Aug 12, 2014 at 1:47 pm

Hey! So all steel will be no upcharge, C Tapers included. If it’s steel, it’s free.

Reply Report comment
- Jason W
  
  Aug 12, 2014 at 2:03 pm
  
  Yes, from what it sounds like ANY and ALL steel shafts Mizuno offers will be no upcharge, and my close friend can confirm this…If I remember right, that also includes C taper, Project X, Nippon, C taper lt…and so on.
  
  Reply Report comment
RadioActive

Aug 12, 2014 at 1:30 pm

When you says “the customer can switch out any shaft for no up-charge” you mean from a select group of shafts Mizzy says you can pick from… Don’t think you can go to C-Tapers for no upcharge…

Reply Report comment
- Jay
  
  Aug 12, 2014 at 1:43 pm
  
  The MP-H5 line will come with C Taper Lite shafts as standard, so that shaft looks like it will be on Mizunos option list, so the CTL’s by that premise, will be available as a no cost option, so will the KBS Tours, but not sure if the standard C Tapers will be on the option list as yet.
  
  Reply Report comment
- Don
  
  Aug 12, 2014 at 3:49 pm
  
  Std C-tapers were no upcharge when I ordered MP54 last year. Their website lists the shaft options and if it’s on there it’s no upcharge.
  
  Reply Report comment
- Lee
  
  Aug 13, 2014 at 2:43 pm
  
  yes you can just check the web site.
  
  Reply Report comment
- Peter
  
  Aug 18, 2014 at 5:39 pm
  
  “No upcharge” applies to any of the steel shafts that are in their fit cart. This would include the C-Tapers.
  
  Reply Report comment
Martin

Aug 12, 2014 at 1:30 pm

The 850 “Regular” video isn’t working

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Jillian Knox

Aug 12, 2014 at 1:18 pm

The forged irons look so sweet!!! They look like they’re moving toward bladed irons for high handicappers.

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