Mizuno JPX921 Forged Irons Review
Golfers that play Mizuno clubs are loyal to the brand by and large. We only see that phenomenon continuing with the JPX921 forged irons. Situated between the brand’s tour and game improvement models, most any golfer can find benefits with these irons. They’re especially geared toward players that like a clean, traditional look, and appreciate quality.
The JPX 921s are some of the best feeling, forgiving, and precisely tuned irons on the market. If you appreciate quality, and expect the most from your irons, the JPX921s are for you.

Price history for JPX921 Forged Iron Set 4-GW, Right Hand, Steel Shaft, Regular Flex | |
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It’s been a while since we heard anything from Mizuno. While that might be the case, it doesn’t mean the company’s lost any respect amongst serious golfers. To this day, they’re one of the most respected club manufacturers in the business.
Today’s review is all about their JPX921 forged irons. As just one member of the greater JPX family, the 921s are in the middle between the tour and game improvement models.
They’re jam packed with new technology to help golfers of all levels have more fun and shoot lower scores.
Key Features
- Stability Framing and toe-bias weighting optimally position the CG for straighter, longer shots.
- Chromology forging enhances feel and responsiveness on both solid shots and mishits.
- Milled slot in the back of the iron increases both stability and forgiveness on off-center strikes.
Who Should Buy the Mizuno JPX921 Forged Irons?
Golfers that play Mizuno clubs are loyal to the brand by and large. We only see that phenomenon continuing with the JPX921 forged irons.
Situated between the brand’s tour and game improvement models, most any golfer can find benefits with these irons.
They’re especially geared toward players that like a clean, traditional look, and appreciate quality.
The JPX 921s are some of the best feeling, forgiving, and precisely tuned irons on the market.
If you appreciate quality, and expect the most from your irons, the JPX921s are for you.
Price history for JPX921 Forged Iron Set 4-GW, Right Hand, Steel Shaft, Regular Flex | |
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Latest updates:
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Mizuno JPX921 Forged Irons Detailed Review
Design and Technology
From a design perspective, it doesn’t get much better than the Mizuno JPX921 irons. Their head profile is compact with a thin top line that gives you confidence when you address the ball. Minimal offset contributes to the classic look as well.
It’s a widely held belief that Mizuno makes some of the finest forged clubs in the game. Chromology forging in the JPX921 irons only furthers that reputation. These irons feel like a knife going through hot butter when you hit them. The advanced forging process also creates faster ball speeds and provides more forgiveness than previous Mizuno iron lines.
Stability Framing positions mass in the irons’ perimeter, with some added weight in the toe. The result is unmatched stability through impact and untold forgiveness.
In the cavities of these irons, you’ll find a milled slot that’s larger than in previous irons. This slot not only adds to the forgiveness equation, it makes the JPX921s extremely stable through the hitting area.
In short, there’s no stone left unturned in the technology or design with the JPX921 irons.
Golfers that play Mizuno clubs are loyal to the brand by and large. We only see that phenomenon continuing with the JPX921 forged irons. Situated between the brand’s tour and game improvement models, most any golfer can find benefits with these irons. They’re especially geared toward players that like a clean, traditional look, and appreciate quality.
The JPX 921s are some of the best feeling, forgiving, and precisely tuned irons on the market. If you appreciate quality, and expect the most from your irons, the JPX921s are for you.
- Outstanding feel and sound, even on mishits.
- Sleek profile inspires confidence.
- Plenty of stock shaft options to choose from.
- Low lofts might not be preferable to some golfers.
- Price point remains higher than other, similar irons.
- Can be hard to find because they’re so popular.
Specs
The JPX 921 forged irons are comprised of four-iron through pitching wedge. Also included is a 50-degree gap wedge.
When it comes to shaft options, nobody does it quite like Mizuno. Stock options include the following:
- KBS $-Taper Black PVD Steel in stiff and extra stiff flex
- KBS $-Taper Chrome Steel in stiff and extra stiff flex
- KBS $-Taper Lite Black PVD Steel in regular and stiff flex
- KBS $-Taper Lite Chrome Steel in regular and stiff flex
- KBS C-Taper Lite Steel in regular, stiff, and extra stiff flex
- KBS C-Taper Steel in stiff and extra stiff flex
- KBS Tour Steel in regular, stiff, and extra stiff flex
- KBS Tour V Steel in stiff and extra stiff flex
- Nippon N.S. Pro 950GH Neo Steel in regular and stiff flex
- Nippon N.S. Pro 950GH Steel in regular and stiff flex
- Nippon N.S. Pro Modus Tour 105 Steel in regular, stiff, and extra stiff flex
- Nippon N.S. Pro Modus Tour 115 Steel in stiff and extra stiff flex
- Nippon N.S. Pro Modus Tour 120 Steel in stiff and extra stiff flex
- True Temper AMT Tour White Steel in regular, stiff, and extra stiff flex
- True Temper Dynamic Gold 105 Steel and regular and stiff flex
- True Temper Dynamic Gold 120 Steel in stiff and extra stiff flex
- True Temper Dynamic Gold Steel in stiff and extra stiff flex
- True Temper Project X 10 Steel in regular and stiff flex
- True Temper Project X LS Steel in stiff and extra stiff flex
- True Temper Project X LZ Blackout Steel in regular, stiff, and extra stiff flex
- True Temper Project X LZ Steel in regular, stiff, and extra stiff flex
- True Temper Project X Steel in regular, stiff, and extra stiff flex
- UST Mamiya Recoil 95 Graphite in regular and stiff flex
- UST Mamiya Recoil ESX Graphite in ladies, senior, and regular flex
The company carries 28 grips so there are plenty to choose from.
Our Experience
I’ve been a fan of Mizuno clubs for as long as I can remember. The attention to detail and premium craftsmanship that go into every club they make are unparalleled.
The JPX921 forged irons are no different. While these clubs have the look and feel of a high-end “player’s” iron, they’re plenty forgiving for golfers of all abilities.
I was especially impressed with the aesthetics of these irons. Their straight lines, forged finish, and compact profile scream sexy. Not to mention the fact that they just look like they were meant to be behind a golf ball.
The responsiveness these clubs afford is unlike anything else too. Pure shots are heavenly, and even the mishits still feel solid. That speaks to JPX 921’s forgiveness too.
Even though these clubs are a couple years old, they remain some of my personal favorites.
Conclusion
Out of all the major club manufacturers, Mizuno is arguably the quietest when it comes to marketing. Perhaps that’s because their clubs sell themselves. They’re just that good.
Even though they’re a couple years old now, the JPX921 forged irons remain some of the most finely tuned, well-built irons on the market.
The best part is that they’re suited for just about anybody. If you have the chance to hit these irons for any reason, do it. It’ll be an experience you won’t forget any time soon.