PING G425 Irons – Key Takeaways
- PING’s new G-series game improvement irons feature a more compact look than G420.
- PING uses new metalwood-style Variable Face Thickness technology to boost ball speed.
- G425 features higher MOI and a slight left bias.
- $137.50 per club steel, $150 per club graphite
- Retail availability on Feb. 4
Irons are like airports – they’re never really finished. There’s always something getting tweaked, improved or dressed up. The new PING G425 irons, for example, aren’t a total makeover compared to the now two-year-old G410 irons. They are, however, tweaked enough, dressed up enough and different enough to be considered an upgrade.
The G410 was an overall meh performer in MyGolfSpy’s Most Wanted Game Improvement during the last two years. What it lacked in ball speed, carry distance and accuracy it tried to make up for in forgiveness, launch angle and the vastly underrated category – for game-improvement irons, anyway – descent angle.
PING is usually on an 18-month release schedule with its irons but, thanks to COVID-19, the G410s received an extra six months in the spotlight. Do the upgrades to the new PING G425 irons make it worth the wait? Let’s take a look.
PING G425 Irons – Distance Without Loft-Jacking?
The game improvement iron category is tricky. Distance makes us all warm and mushy and it’s the easiest metric to digest in the hitting bay. But distance without consistency (aka forgiveness), playability and descent angle doesn’t necessarily help golfers play better or have more fun.
Better and fun, of course, is the PING wheelhouse.
As mentioned, the PING G410 didn’t exactly set the world on fire in MGS Most Wanted testing during its two-year run. In fact, 2020 results were about as middle of the pack as you can get. While G410 performed in the upper half in ball speed, it was in the lower third in carry distance. A spec-check points out the obvious reason: the G410’s lofts are weaker – by upwards of three degrees – than the distance leaders.
The new PING G425 irons are trying to squeeze out more distance without resorting to loft-jacking and without losing playability.
“It’s about distance combined with forgiveness,” says PING Director of Engineering Ryan Stokke. “When we look at the design, how do we make it better performing? How do we continue to get more forgiveness? How do we make the iron launch higher and land steeper?”
Holistic? Yes. PING always seeks – and usually finds – incremental improvements from iteration to iteration. The PING G425 touts consistency, appearance and playability along with a wee bit of extra distance.
Goodbye to COR-Eye
COR-Eye has been the signature face-flexing technology since its debut in the PING G-MAX irons in 2015. To squeeze a bit more ball speed – and a few extra yards – PING is saying buh-bye to COR-Eye.
“We’ve actually gone to a metalwood style of VFT (variable face thickness),” says PING Engineering VP Paul Wood. “It’s not a million miles away from COR-Eye. We want to make the face flex and we want to get more ball speed out of that flex.”
The goal is to get the whole face flexing simultaneously while stabilizing the center of the face. To PING’s credit, it’s not claiming ballistic distance gains or any such nonsense – just a bit more ball speed. In addition, bidding farewell to COR-Eye also allows PING some creativity with G425’s cavity badge to improve sound and feel.
“Our simulations show a marginal ball speed gain over what we’re doing with COR-Eye,” says Wood. “The secondary benefit is we can mesh that with the badge. We can get full coverage with the badge to get a more solid and muted feel and a slightly increased ball speed at the same time.”
The new multi-material badge is a mix of aluminum and polymers. The more materials in a badge, the more it helps dampen vibrations. And, according to PING, it’s much nicer to look at than previous G-series irons.
The face itself is PING’s unique Hyper 17-4 stainless steel. Hyper 17-4 is a bit of a unicorn, combining the strength needed for durability and enough ductility for ball-speed friendly flex. For the G425, PING has further refined Hyper 17-4, increasing its strength through material chemistry and heat treatment by 10 percent. Stronger means thinner and thinner means more flexibility.
Forgiveness and Weighting
PING pulled an engineering rabbit out of its hat with the G410. That model had noticeably less offset, a thinner sole and a shorter blade length than its predecessor, the G400. Despite that, G410 had an eight-percent higher MOI than G400.
The PING G425 irons go a step further, combining even more compact shaping and a smaller-looking profile with a three-percent higher MOI than G410.
“We’ve tried to make the visual a little smaller,” says Wood. “The actual hittable face is the same size as the G410 but we’ve made the distance from the center of the face to the shaft axis a little smaller while actually improving the moment of inertia at the same time.”
PING achieved its MOI sorcery in the G410 through extreme weighting: high-density screws in the toe and tip weights in the bottom of the hosel. It’s pulling the same trick in the G425 with one added benefit. The extreme weighting makes the new VFT face possible, allowing for a larger unsupported face for higher face deflection.
PING G425 Irons and Hosel-X
Conversations with PING engineering always brings new vocabulary to the table. This year, it’s Hosel-X. It may sound like a Marvel Comics villain but Hosel-X is the distance between the spot where the shaft meets the head and the center of mass.
Why does Hosel-X matter? If all the weight is toward the toe (a big Hosel-X number), the player has to input more torque on the backswing to open the club up as well as input more torque on the downswing to square the club at impact.
“The farther the center of mass is from the shaft, the harder it is to square up,” says Wood. “Not a ton, but enough.”
That’s kind of bass-ackwards if you think about it. Smaller irons aimed at better players are actually – based on Hosel-X – easier to square up. But better players fight the left miss. A GI or SGI iron has a bigger head and can be harder to square up but GI/SGI players are trying to fight the right miss.
“If you could wave a magic wand, you’d want it the other way around,” says Wood. “But that’s the physics of it.”
Even though the PING G425 face is about the same size as the G410, Hosel-X is smaller.
“We’ve shaved off a bit so the center of mass is closer to the hosel by just a little bit,” explains Wood. “That makes it easier to turn over and makes it a little more neutral or a little left-biased without touching the moment of inertia.”
PING insists shrinking Hosel-X doesn’t move the center of mass away from the center of the clubface very much. Wood says a good lie-angle fitting will take care of any potential issues.
Forgiveness is Relative
PING likes to call its G-series “game enjoyment” irons as opposed to “game improvement” irons. And PING wears forgiveness as a badge of honor.
“When we measure our competitors’ super game improvement irons, our game improvement MOIs are usually higher,” says Wood. “And our player’s irons – the i210s – are up there in inertia with many of the competitors game improvement irons.”
While we’re always skeptical of any OEM’s internal testing, PING did share some interesting results. In a G425-G410 head-to-head test among mid-handicap golfers who hit their 7-iron 150 to 155 yards, PING found the G425 irons were a little bit longer. (“Not a huge amount,” says Wood.) More importantly, they saw a huge improvement in overall shot area – with particular decreases in long-left and short-right misses – as well as a bit more left bias.
“It was a 20-player test,” says Wood. “From a strokes-gained analysis, 75 percent of the players had a better strokes gained with the G425 than the G410. You’re never going to get 100 percent of the players with any iron, but 75 percent is a pretty significant result.”
One other feature of note: the PING G425 set wedges all have machined faces and grooves. Typically, set-matching wedges in any category don’t have the requisite “wedginess” players look for. The G425 wedges (PW through LW) feature the same face and grooves as PING’s Glide 3.0 wedges.
“We try to focus on what the golfer is trying to do more than what they say they want,” says Wood. “We always focus on building on the technology and knowledge we already have.”
Specs, Price and Availability
The PING G425 irons loft matrix is virtually unchanged from that of the G410. It’s based on a 30-degree 7-iron and, as PING points out, any distance gains over G410 will be marginal. If it’s distance you seek, the G425 will also be available in Power-Spec, with lofts jacked anywhere from .5 to 2.5 degrees, depending on the club. If you want even more distance, the PING G700s are always an option.
Like its G-series predecessors, the PING G425 irons feature proprietary PING shafts: the AWT 2.0 in steel and the new Alta CB Slate in graphite. AWT stands for Ascending Weight Technology. That means the shafts get progressively heavier as the irons get shorter. Light shafts in the long irons make them easier to get airborne and heavier shafts in the short irons make them easier to control.
PING says the Alta CB Slate is a slight evolutionary change from the Alta CB Red. As with most stock graphite shafts, it’s lightweight and high launching with a slightly softer feel than the AWT 2.0.
No upcharge options include the Nippon N.S. Pro Modus3 105, True Temper Elevate 95, KBS Tour, Dynamic Gold, DG 105, DG 120 and Project X LZ. PING is continuing its partnership with ARCCOS and the ARCCOS GP Light 360 Tour Velvet is the standard grip with the sensor included.
The PING G425 irons will retail for $137.50 per stick in stock steel and $150 per stick in stock graphite.
Pre-sale and custom-fitting starts today. The PING G425s hit the stores on Feb. 4.
For more information, visit the PING website.
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CB8 months ago
I really appreciated your detailed comment about the set wedges (below). For me that is a great idea for PING to do – do any of the other club makers do something similar with the set irons?
“One other feature of note: the PING G425 set wedges all have machined faces and grooves. Typically, set-matching wedges in any category don’t have the requisite “wedginess” players look for. The G425 wedges (PW through LW) feature the same face and grooves as PING’s Glide 3.0 wedges.”
Mike Anthony2 years ago
Took the leap last Fall with the Cobra One Lengths, and my game has suffered miserably. It’s a wonderful concept in the 4H, 5i & 6i … but incredibly difficult to get past the length of the 9i down to GW.
Went to Dick’s yesterday and tested the Titleist T200 and the G425 … walked out placing a custom order (with Nippon shafts) on the Ping’s while saving $400 in passing on the T200s.
I’ve always kept Pings at an arms length for I never really liked their looks and lack of ferrules in their irons. I know the ferrules have been on their irons the past few years, but the massive offset was also a turn off in their G series. These clubs are dramatically different in appearance than previous G series irons … and the color way if absolutely gorgeous.
I had absolutely no intention of even considering Ping irons, and couldn’t be more excited to get these clubs in a few weeks.
Steve C#22 years ago
I don’t go to my local theater to often. However, it seems like every time I do all this stress is distance and have their product is so much better than my current bag. But of course, when I hit their seven iron 195 yards, then back it up with mine at 170, I believe they think they have sold me on something. I chose to re-shaft my TM R7 TP’s and that has made a noticeable improvement, plus it saved me 1000 bucks.
Steve C#22 years ago
Theater should read “fitter”….dang voice machine.
Anders2 years ago
Just ordered the G425 with retro-loft! About 1.5 degrees weaker than standard. Play old titleist with heavy, low launching KBS, moving to Alta CB and this forgiving club. I’m tired of low, bouncing shots, I don’t have the swing speed anymore so this will give me much more fun on hhe course! Have never felt anything so straight, consistent and easy to hit as the G425
Tony2 years ago
With the 425 series woods & irons available in early February, any insights as to when we might see a price drop on the 410 series?
Bob2 years ago
I really never liked the look of the chunk missing in the hosel. IMHO
Steve C2 years ago
You’re right about the chunk. It’s not pretty when in the bag but at address its invisible so not much of a bother. I’m used to mine on my i200’s.
Bill2 years ago
Great write up/overview John! I just tested the G425 against my G410 yesterday at the range and found the results very much in-line with PING’s claims. Ball speed was just a wee bit higher. Except for the more refined, subdued, less glitzy badging, which I like, they are 99% G410’s from an appearance perspective. Sound seemed very similar to the G410’s. Your review is the first I’ve heard about the Hosel-X and its left bias trait. That is really smart of PING as an aide to the intended target user group. As a 12 handicap, my short right misses far out number left pulls. While an extra 3% MOI dosen’t sound like much, those coming from early G-series irons would notice a big benefit. The decision to machine faces & grooves on the base set wedges yet another example of PING’s focus on customer needs. They are more like the tortoise than the hare in the evolution of golf irons. To those of us who appreciate substance over hype, much appreciated!
Walter2 years ago
Right, no loft jacking, lol, so a 30* 7i isn’t loft jacking. My 7i is 35* like it’s supposed to be, my 6i is 31*. So their un-jacked 7i is stronger than my 6i. Typical of industries, if you don’t like the norm…….change it!
Mike2 years ago
Hey, it’s 2021 now, nothing is as it’s supposed to be. You must be talking strictly about “players” irons. Those lofts are still similar to what they were years ago. I’m a Ping guy,. & the G2 irons, released in 2003, actually played at 34.3. degrees. Lofts have been getting stronger every year, even w/ Ping clubs.
I can’t imagine why anyone today would give a crap about what the “number” is on the bottom of the club, it’s become meaningless. It’s the loft that you should be concerned with in terms of gaping your irons.
Steve C2 years ago
I don’t want the Arcos grips – I like the GP Tour Velvet Cord grip. Will they come with the Arcos sensor or do I have to specify “no sensor”?
Bill2 years ago
A comment/question I forgot to ask. It would be nice if the Arcos was a free option. I currently use Shotscope and the Arcos would prevent the RFID tags being installed w/o re-gripping.
mizuno292 years ago
You guys will have to tell me about the G 420…………Must have missed that one!!!!!!!!!!!!!!!!!
Nick2 years ago
Tom D2 years ago
Maybe he was smoking some wacky tabaccy when he wrote the first bullet point, and was “inspired”… LOL
Dennis2 years ago
Being a senior player, I wonder if strengthing lofts in irons actually helps to increase distance. I was fitted for a driver 3 years ago and when they increased loft, I actually hit it farther. I question whether very strong lofts in irons is beneficial for the slower swing player.
Jose2 years ago
I had my G410 irons powers spec and it didn’t fair well. The ball launched lower and the feel was just not right. I had the irons bent back to standard and ball flight went up, more consistent and better feel.
Marq2 years ago
I went to the same situation. Felt I picked up nothing when I took the g400s on the course, eventually had the power spec loft done. Realistically all that did was turn my 7i into a 6 & 1/2 iron with a lower ball flight and more roll. Not optimum for going into greens.
Dave Tutelman2 years ago
Dennis, you’re partly right. For the longer irons, players with lower clubhead speed suffer decreasing and possibly even negative gaps between clubs. I call the effect “long iron droop”, because the nice smooth distance increase on a graph of club vs distance will droop when it gets to the longer irons.
But the shorter irons do get more distance from stronger lofts. That is why sets that depend on loft-jacking for distance have such small distance gaps from club to club in the longer clubs. They have already expended the loft-jacking they can do in the shorter clubs, and are trying to keep long iron droop to an acceptable level — so they can’t loft-jack the long irons.
So where is the loft where droop sets in? That depends on your clubhead speed. For detail on this, see my article at
What you say about the driver is completely true. Unless you have tremendous clubhead speed, it is likely you are playing a driver with too little loft.
Greg2 years ago
I agree with your opinion on long iron droop.
Hybrids looks very much on pings radar to replace the long iron.
Then their is the ball design which I FOUND LATELY to be a minefield.
The balls being matched to clubs is so important these days ,just buying a quality ball is not good enough.
Personally I have always loved the skill you need to hit a long iron and love playing them but that is not where the game is going . Combo everything is here with robot design. I dont think there is a club fitter out there now that is able to keep up with all this change . They may be soon be like dinosaurs as the manufacturer takes his job.
Always teste2 years ago
It is so long as the launch and descent angles are improved, which this article does a nice job describing. The driver is a different animal because carry can be heavily influenced by spin in either direction i.e. too little spin is a thing as is too much.
Mark2 years ago
I agree about the stronger lifts for senior players. I am 65 and have lost a lot due to normal aging and back problems.
Add in lighter shafts to help and lose the feel.
El2 years ago
At 68, and 85-90 ss, higher driver launch angle is key for me.
Turn on the water*, hold a hose (no, not THAT one) parallel to the ground., and slowly raise the angle of the hose.
The stream will land farther out at a certain point (launch angle) with the same pressure (power).
There is some debate about hard vs soft water and distance.
Mike2 years ago
Very comprehensive review. However, for me, I stopped being a ping iron guy when they came up with that “game enjoyment” nonsense with the G400 series. Despite being “fitted”, I had those for a month, & out in the “real world” (on the course), when I compared SAME-LOFTED lofted clubs to my 12-year-old G10’s, the G400’s were neither longer nor more accurate. Guess that proves that not all fittings are equal! I didn’t like the 410’s nor the 710’s. Eventually I found “love” with a Callaway set, so hopefully I won’t be shopping for irons for a few years.
I think it’s gotten absurd to compare different irons. The lofts go all across the board. The five iron loft of the g425 is 23.5, the new PXG 5iron (from a recent article). was 21. That’s over half a club difference, again, are they realistically comparable? I’ve come to ignore the number on the bottom of the iron when testing, just tell me the lofts & I’ll make my decisions that way. In any case, you still have to fit the irons in your bag. It sounds ridiculous for me to say I start my bag with a six iron yet end up carrying two gap wedges.
mizuno292 years ago
I'”ve got a game enjoyment club in my pants!!!!!!!!!!
Dan2 years ago
I agree 100% with your comment. The numbers across clubs vary too much. I learned about club making from an old pro and he use to talk about standards. They [standards] use to mean something. I don’t understand why you would want to make 5 iron harder to hit. It seems to me that the industry is working itself into a corner by make game improvement irons to increase the distance you hit while making it harder to hit straight.