Which Mizuno iron is best for me?

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Which Mizuno irons should I buy? Your guide to each iron in Mizuno's 2021 line-up and who they are aimed at.

Most major brands have five, six or even seven irons in their 2021 line-ups, which shows the importance of having solutions for all golfers, irrespective of ability or personal preference. Choices range from slimline musclebacks to hollow heads and cavity backs, and while some are forged, others have springy faces just like a driver.  

RELATED: Tested – Best Irons

So with such a huge amount of choice out there, we felt it was far too easy for golfers to get confused about which iron best suits them.

Even golfers who have a good idea of which iron suits them probably don’t realise what they put on the line in terms of ball speed, carry and forgiveness by choosing a set above their station.

To help you choose the right Mizuno model, we will show you how the Japanese brand’s whole iron range compares against each other.

As well as launch monitor data from our pro, we’ve given every Mizuno iron a forgiveness rating (1 = least forgiving, 5 = most forgiving) and a handicap guide to spell out simply what sort of players should be considering what sort of models, and why.

REVIEWED: Mizuno's ST-X and ST-Z drivers

Neil Wain is the Today's Golfer golf test professional.

How we tested which Mizuno iron is best for you

We asked Mizuno to submit their entire 2021 irons range for testing.

We created a controlled test environment indoors at Keele Golf Centre and used premium golf balls.

We collected a ton of data from every iron shot hit, using a Foresight Sports GC Quad launch monitor, all of which can be found further down this piece.

REVIEWED: Mizuno's ES21 wedge

Mizuno MP-20 MB iron.

Mizuno MP-20 MB Irons

RRP £150 per iron
Category Muscleback blade
Forgiveness rating 1
Handicap range 4 and below
Construction Forged from a single piece of 1025E HD mild carbon steel
Availability 3-PW
Stock shaft Choose from 20 premium options without upcharge
7-iron loft 34°

Thanks to Mizuno’s MP family sporting more traditional, shiny finishes, they’re likely to appeal to the eye of very good ball striking traditionalists. Our test data has the MP-20 and JPX921 Tour jointly down as Mizuno’s least powerful irons. So, if your game demands keeping an eye on speed or distance, the two models are not for you.

Should you need any more cautionary words, the MP-20 MBs gave our test pro his highest Mizuno 7-iron drop-off –18 yards (11% vs 2.4% with his smallest) – which highlights brilliantly how tough they are to live with unless you’re really good.

BUY IT NOW: Get the Mizuno MP-20 irons from Scottsdale Golf

Mizuno JPX921 Tour iron.

Mizuno JPX921 Tour Irons

RRP £150 per iron
Category Players iron
Forgiveness rating 2
Handicap range 4 and below
Construction Forged from a single piece of 1025E HD mild carbon steel
Availability 4 - GW
Stock shaft Choose from 20 premium options without upcharge
7-iron loft 34°

Very much a modern blade, and the same sort of design that other brands refer to as a ‘muscle' or 'tour cavity’ iron.

Mizuno say golfers who plump for the JPX921 Tour irons (over the MP-20 MB) generally see shots in straighter lines with the ball falling on one side or the other of the target line. The lower workability (compared to the MP-20 MB) is partly down to the 2.1mm longer blade length (7-iron) which adds a smidge more MOI.

Give serious thought before choosing a set ahead of the next JPX921 model (JPX921 Forged), as our test data shows you’d be giving up eight yards of carry with a 7-iron.

BUY IT NOW: Get the Mizuno JPX 921 Tour irons from Scottsdale Golf 

WATCH: Best Muscleback/Blades Test

RELATED: Tested – Best Forged Irons

Mizuno MP-20 MMC golf irons.

Mizuno MP-20 MMC Irons

RRP £165 per iron
Category Players distance
Forgiveness rating 2.5
Handicap range 10 and below
Construction Forged from a single piece of 1025E HD mild carbon steel
Availability 4-PW
Stock shaft Choose from 20 premium options without upcharge
7-iron loft 32°

The MMC’s 7-iron loft gives a lot away about who they are aimed at. View them as a more forgiving alternative to the MP-20 MB or JPX921 Tour, or a more workable option than the MP-20 HMB and you really won’t go too far wrong.

A solid blend of players iron shape with a degree of forgiveness thanks to Mizuno mixing a traditional head shape with tungsten toe weighting and a titanium muscle badge.

For our consistent striking test pro, the MP-20 MMC irons gave really consistent distance control, with just four yards drop off (2.4%) on a 7-iron, and that’s 8.6% (14 yards) better than the MP-20 MB.

BUY IT NOW: Get the Mizuno MP-20 MMC irons from Scottsdale Golf

Mizuno MP-20 HMB golf irons.

Mizuno MP-20 HMB Irons

RRP £180 per iron
Category Hollow body players distance
Forgiveness rating 2.5
Handicap range 12 and below
Construction Hollow body with forged chromoly steel face and neck
Availability 2-PW
Stock shaft Choose from 20 premium options without upcharge
7 iron loft 32°

Choosing between the MP-20 HMB and the JPX921 Forged is not easy. The specs say they’re very evenly matched for head size, sole width and hosel offset. The key difference is the HMB’s hollow head, whereas the Forged is a more traditional cavity back. The Forged is also a degree stronger (7-iron).

We think the decision comes down to a couple of points; how you feel about hollow head and thin, faster face tech, as some golfers challenge its predictability; and do you like the livelier feel of golf’s first full-forged chromoly steel iron?

It’s worth noting that Mizuno’s MP-20 HMB iron is likely to be replaced later this year, while the JPX921 Forged is scheduled to be around until 2022. 

BUY IT NOW: Get the Mizuno MP-20 HMB irons from Scottsdale Golf

WATCH: Which Mizuno MP-20 Iron is right for you?

RELATED: Which TaylorMade iron is best for you?

Mizuno JPX921 Forged iron.

Mizuno JPX921 Forged Irons

RRP £150 per iron
Category Players distance
Forgiveness rating 3
Handicap range 12 and below
Construction Forged from a single piece of 4120 chromoly steel
Availability 4-GW
Stock shaft Choose from 20 premium options without upcharge
7-iron loft 31°

Mizuno say the JPX921 Forged are a really good fit for 10-14 handicappers, and thanks to pretty low offset in the longer irons, we wouldn’t go above that.

The Forged is a brilliant mix of what lots of reasonable club golfers look for in a set of irons. There’s a really good-looking head shape, a forged feel and sound as well as decent amounts of power, plus a good degree of forgiveness when shots don’t impact the centre. Mizuno’s brilliant array of shaft options (at an extra charge) also mean the Forged can be dialled into a wide range of abilities and swing speeds.

BUY IT NOW: Get the Mizuno JPX 921 Forged irons from Scottsdale Golf

WATCH: Best Players Distance Irons Test

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Mizuno JPX921 Hot Metal Pro golf irons.

Mizuno JPX921 Hot Metal Pro irons

RRP £135 per iron
Category Mid-handicap
Forgiveness rating 3
Handicap range 16 and below
Construction One piece, cast from 4140M chromoly steel
Availability 4-GW
Stock shaft Choose from 20 premium options without upcharge
7 iron loft 29°

Each iron in the Mizuno line-up thus far has been one-piece forged or comes with a forged face and hosel. But the JPX921 Hot Metal Pro has a cast construction, which means if forged models are an important factor in a new set of irons, you need to back up.

However, if you’re looking for a brilliant mid-handicap iron that has a hint of a players look with less offset and a more compact head, the Hot Metal Pro delivers in spades.

Even though the Pro has the same 7-iron loft (29°) as the Hot Metal, the smaller head means a little less face flex, which for our test pro gave 10 yards of carry distance difference in favour of the standard Mizuno Hot Metal. Well worth remembering.

BUY IT NOW: Get the Mizuno JPX921 Hot Metal Pro irons from Scottsdale Golf

WATCH: Best Mid-Handicap Irons Test

RELATED: Tested – Best Mid-Handicap Irons

Mizuno JPX921 Hot Metal iron.

Mizuno JPX921 Hot Metal irons

RRP £120 per iron
Category High handicap
Forgiveness rating 4
Handicap range 24 and below
Construction One piece, cast from 4140 chromoly steel
Availability 4-GW
Stock shaft Choose from 20 premium options without upcharge
7-iron loft 29° 

A brilliant game improver or higher handicapper iron, depending on your ball striking. And it’s no surprise the JPX921 Hot Metal iron is the longest carrying Mizuno you’ll get your hands on this year.

At more average swing speeds distance gaps narrow, but there’s no covering up how our test pro hit the Hot Metal 17 yards further than the JPX921 Forged, and 10 yards further than the Hot Metal Pro.

Just remember, compared to the competition (TaylorMade SIM2 Max OS, Ping G710 and Callaway Mavrik), the Mizuno will usually be a couple of degrees weaker, so they’re likely to give up a fraction in terms of distance.

BUY IT NOW: Get the Mizuno JPX921 Hot Metal irons from Scottsdale Golf

WATCH: Best High-Handicap Irons Test

RELATED: Tested – Most Forgiving Drivers

How the Mizuno irons compared on our launch monitor

Mizuno JPX921 Hot Metal iron.

WATCH: Which Mizuno JPX921 Iron is right for you?

 

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