Srixon ZXi4 Irons Review – Confidence in Every Swing

Today, we’ll be reviewing the Srixon ZXi4 irons.

The ZXi4 is the game-improvement model in Srixon’s ZXi family, engineered to deliver a high degree of forgiveness and distance, as well as a forged feel, in a hollow-body design.

Compared to its predecessor, the ZX4 Mk II, the ZXi4 is designed to significantly improve feel and get even more speed off of the face with new i-FORGED technology.

How does the ZXi4 iron actually perform in our evaluation? How does it compare to the ZX4 Mk II? Who is it best suited for? Is it worth putting in the bag?

Here’s what will be covered in the review:

Read on to learn what you need to know to make an informed purchase.

Note: Unless otherwise stated, stock shafts and stock grips are used when evaluating this club. In most cases, the golf clubs reviewed on Golfstead are acquired temporarily for testing purposes and are not purchased. The review that follows is based on the personal experience and research of the author. Because everyone’s swing and body are different, results with a particular club may differ from person to person.

What are the reviews like?

The Srixon ZXi4 irons won a gold medal on the Golf Digest 2025 Hot List. They have a very high 4.9/5 average rating on the Srixon website, a 5/5 user rating on Golf Galaxy, and a generally positive reception from critics.

What People Like

tremendous forgiveness
smooth, solid feel at impact
long
easy to hit
great looks

What People Don’t Like

gapping issues, particularly in the longer irons
some dislike the strong lofts

Order the Srixon ZXi4 irons

The Features

Key technologies of the ZXi4 irons include:

i-FORGED: the ZXi4 irons are made using SUS17-47 steel for the body, which is softer than the steel used in previous ZX4 models and is designed to produce a better feel with more precise loft & lie adjustment. The face plate is forged from HT-1170 stainless steel.
Mainframe: this is a pattern of milled channels on the back of the iron that maximizes ball speeds across the face and improves MOI and forgiveness.
Tour V.T. Sole: a V-shaped sole, with higher bounce on the leading edge and lower bounce on the trailing edge, is designed to glide through the turf so that hitting behind the ball is much less penalizing.
Progressive Grooves: grooves become sharper, narrower and deeper in the short irons and wedges (8-SW) in order to generate maximum spin and stopping power. Laser milling is performed between each groove to enhance spin.

The ZXi4 has a hollow-body construction which helps the face flex more and generate more ball speed. It has the most confidence-inspiring look in the ZXi family, but also retains many visual aspects that are appealing to better players.

Stock Info

The ZXi4 irons are available in 4-SW. Sets and singles are available.

Also available are women’s ZXi4 irons. These have the same head technologies but come with special shaft and grip configurations that are tailored to women in order to maximize their performance.

The stock shafts for the ZXi4 are the KBS TOUR LITE (steel), KBS TGI Tour Graphite (graphite), and UST Mamiya Recoil DART 65 (graphite). The stock grip is the Golf Pride Tour Velvet 360.

The purchase of these irons makes you eligible to receive free Arccos Smart Sensors and a 45-day free trial to the Arccos Caddie app.

Below are the specs of the ZXi4 irons. Click or zoom to enlarge.

The Performance

In the sections that follow, I’ll talk about my experience with the ZXi4 irons. Let’s jump right in.

Distance

Based on my field test, ball speed gains over the ZX4 Mk II irons are marginal at best — maybe 0.5-1 mph. For me, this translated to 2-3 yards of additional distance on average.

In the game-improvement category, it’s worth nothing that the ZXi4 irons aren’t particularly long. I find them to be average or below average in distance compared to other 2025 irons.

Forgiveness

Like the ZX4 Mk II, the ZXi4 is an extremely forgiving iron. In my test with the 5-iron, my distance loss from mis-hits did not exceed 6% of my optimal distance.

While I experienced a small variability in dispersions between the ZXi4 and the ZX4 Mk II, this is likely due to randomness. Overall forgiveness, both in terms of ball speed retention and directional forgiveness, doesn’t appear significantly different from its predecessor.

Playability/Trajectory

I find the launch of the ZXi4 iron to be a good 1-1.5° lower than the ZX4 Mk II; I think the main reason for this is the reduced offset. In my opinion, higher handicappers could have used more offset here.

Spin rates seem to be marginally higher, which helps compensate somewhat for the lower launch, and the irons are easy to hit in any case.

Some reviewers have mentioned that the loft increments — smaller in the longer irons and bigger in the shorter irons — can cause inconsistent gapping and bunching. In my case, the gapping of the ZXi4 was passable, but I did notice that my distances were closer together than normal in the long irons which isn’t necessarily ideal.

The ZXi4 irons have some workability to them, so more capable players should be able to shape their shots to a large extent.

The Look

The ZXi4 has a thicker profile than the ZXi5 and ZXi7 models, with a wider sole, thicker top line, and longer blade length. It’s intended to inspire confidence behind the ball, and I actually think it’s one of the most tasteful and measured game-improvement looks out there.

The offset is substantially less than on the ZX4 Mk II; this was probably done in order to give the ZXi4 more of a players appeal despite its GI chunkiness. It’s clear that Srixon didn’t want to stray far from the appearance of its sister models.

A black dot on the toe of the ZXi4 indicates the iron’s hollow-body construction. The shape and geometry of the cavity is classy, and the chrome aesthetic (with satin and matte finishes as well as subtly contrasting regions) give the iron a vibe that is clean and sleek.

The Sound & Feel

I found the feel of the ZXi4 irons to be even softer than the previous generation, which is rather expected given the use of SUS17-47 steel in the chassis. At the same time, the feel is explosive and solid, with a touch of clickiness caused by the hollow body.

The impact sound is crisp and snappy in the long irons, but more muted in the short irons. Across the entire set, the iron produces a very crisp, balanced sound with medium loudness.

One of the things I really like about the ZXi4 is that while it’s no less forgiving than the ZX4 Mk II, feedback is clearer and more informative, so you can pinpoint your misses a little better. That’s not to say that mis-hits feel harsher, but it’s just easier to discern where the ball makes contact with the face.

Of course, the Tour V.T. Sole is fantastic, delivering smoothness and consistency through the turf. With the ZXi4, Srixon has maintained the improvements in turf interaction the ZX4 Mk II made over the original ZX4.

Where To Buy These Irons Online

Aside from the Srixon store, if you want a brand new set of ZXi4 irons with custom shafts, grips, lengths, lofts, etc., head over to Golf Galaxy. They are one of the largest golf retailers in the world, offering a club trade-in program, a 90-day Play Guarantee, and other benefits.

You can also check the stock at Global Golf and PGA TOUR Superstore. These merchants may offer club trade-ins, points programs, or other perks to enhance your shopping experience.

Another excellent destination for both new and used ZXi4 irons is eBay. You can often get irons there for prices that can’t be beat anywhere else.

Final Thoughts

In many ways, Srixon’s ZXi4 is a solid game-improvement iron with decent distance, outstanding forgiveness, and a mid launch. The feel is the softest and most appealing of any ZX4 iron yet.

Having said this, I think the ZXi4 lacks some focus. On the one hand, Srixon wants its looks to be consistent and congruent with the other models in the ZXi family (hence the reduced offset and other players-like attributes), but on the other hand, they want it to be a strong GI offering.

These two things are somewhat in conflict with each other, and as a result, it’s hard to understand what the ZXi4 is really trying to be.

For this reason, the ZXi4 would not be one of my top choices of GI irons for the 2025 season, but evidently, many mid and higher handicappers love it. I definitely recommend you give it a try if you’re on the fence.

Order the Srixon ZXi4 irons

Are you interested in the ZXi4 irons? Have you played them? What’s your experience? Let us know in the comments below.

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