Equipment
First Look: New Mizuno MP-4 and MP-54 irons
This week, Mizuno has slowly been leaking out photos of its new MP-4 and MP-54 irons through its Facebook page.
We won’t be getting details on the design of the irons until closer to the end of the month, but there are some obvious things we can tell from the photos we gathered below.
Click here to read what members are saying about the irons in the forums.
The MP-4 irons are the first blade offering from Mizuno since Fall 2011. They’re forged, and have a thick muscle pad located behind the impact area that helps to create a soft feel at impact.
The MP-54 irons are also forged, but they will offer much more forgiveness than the MP-4’s. They’re a compact cavity back iron with a deep undercut that should translate into more ball speed and better performance on mishits.
The MP-54’s moderate sole and blade widths indicate that they’re slated for the tour, and will be competitive against irons such as Titleist’s AP2 714 and TaylorMade’s RocketBladez Tour.
Fans of Mizuno irons have been asking the company to release an iron that was slightly smaller than its highly praised MP-64 irons, as well as one that was slightly larger than the MP-64’s, which is exactly what Mizuno appears to have done with the MP-4 and MP-54.
Mizuno MP4 irons
Mizuno MP-54 irons
Click here to read what members are saying about the irons in the forums.
In a golf world where players are looking to eke out every yard possible, usually by lengthening their drivers to add clubhead speed, there’s one player at the PGA Championship who’s going in the opposite direction. In fact, for Rickie Fowler, his goal off the tee is not about gaining extra distance or yards north to south, but rather about shrinking the misses from east to west.
Ahead of the PGA Championship and the week prior at the Truist Championship. Fowler mentioned to Cobra Tour Rep Ben Schomin that the driver didn’t quite swing feel the same as everything in the bag. As a result, and with Schomin’s suggestion to try and sync everything up with the big stick, Fowler decided to test out a shorter length shaft.
“He’s been at 45 (inches), and he’d been at 45 for a few weeks, 44 1/8 (inches) is really is where he is been living really for the most part, for the last couple of years, and is where he is been comfortable,” Schomin told GolfWRX. “It just felt like it was a little long and loose on him.”
Interestingly, Fowler ranks 40th in Driving Accuracy this year on the PGA Tour. It’s his most accurate season with the driver since the start of the decade. But sometimes for players, feel is more important than statistics.
“It was really more of a trying to get the swing to feel the fluidness from club to club to club to try to get it to feel the same,” Schomin added. “And so we took it down to 43 and a quarter, and it was a touch of a ball speed loss, just based on that overall club head speed. But honestly, he squared it up probably a little better. The right miss wasn’t nearly as far. So really, overall down-range dispersion tightened up a fair amount, and he felt confident in swinging it.”
The change in length had Fowler’s caddie, Ricky Romano, beaming at how well he had driven during Tuesday’s practice round at Aronimink. So much so, he was asking Schomin not to suggest changes anymore.
Fowler’s shaft-shortening is one of a few driver adjustments he’s made this season, and to Schomin’s credit, it’s thanks to the fact that he and the rest of the Cobra team had Fowler fit very well into three of the four heads in the Cobra OPTM lineup.
“He had three distinct drivers and the biggest decision was trying to decide which worked best at that time,” Schomin told GolfWRX previously. “He’s played the majority of the season with OPTM X, but has also played a couple of tournaments with OPTM LS. His overall driving stats have been good.”
At the RBC Heritage earlier this spring, Fowler switched drivers, changing from his Cobra OPTM X and into the Tour, low-loft Max K model that Gary Woodland used to win just a few weeks prior.
Now for the PGA Championship, Fowler’s back in the X head, but still using the UST Mamiya LIN-Q PowerCore White 6TX shaft, just a little bit shorter.
“Will he stay there? I’m not sure,” Schomin added. “Could we end up say at like 43 and 7.5 (of an inch). If it’s giving him the same feel of consistency through the bag, then I think we might end up just a touch longer. But if he likes where he is at, he’s confident where he is at, that’s really all that matters.”
If there’s more testing, though, just don’t tell his caddie.
What you need to know: As is customary for the Fairhaven-based company, Titleist officially announced today that its GTS drivers are headed to retail, following a successful tour release. The GTS2, GTS3, and GTS4 drivers will be available in golf shops June 11.
Since debuting at the Texas Children’s Houston Open, the new GTS lineup has quickly gained traction on the PGA Tour, with more than 50 players already making the switch to a GTS2, GTS3, or GTS4 driver. Among them are Justin Thomas and Jordan Spieth.
Justin Thomas’ Titleist GTS2 driver (Greg Moore, GolfWRX)
According to Titleist, the GTS series builds upon the performance foundation established by the GT Series, while introducing several major technological advancements, including a new Split Mass Frame construction, refined aerodynamics, and an updated Speed Sync face design.
2026 Titleist GTS drivers: What’s new, key technology
Split Mass Frame and thermoform body
At the center of the new GTS lineup is a redesigned internal structure: the Split Mass Frame. This technology works with a full-thermoform body made from Titleist’s Proprietary Matrix Polymer (PMP), a lightweight composite that enables engineers to reposition mass more efficiently throughout the head. Compared to the previous GT generation, GTS drivers feature nearly double the PMP material, increasing from 13 grams to 26 grams, while maintaining the sound and feel preferred by better players.
The weight savings from the thermoform construction allowed Titleist engineers to strategically separate mass placement inside the head. Specifically, more weight is pushed rearward to improve stability and forgiveness, while additional mass is positioned low and forward to optimize speed, launch, and spin.
In short, golfers are able to maintain ball speed and consistency across both centered and off-center strikes.
Faster aerodynamics
Titleist also refined the aerodynamic shaping of the GTS heads to help players generate more clubhead speed.
The tails of the new GTS2 and GTS3 heads have been raised compared to previous models, helping airflow stay attached to the crown and sole longer during the swing. According to Titleist, the improved airflow reduces drag and increases speed without affecting launch conditions or center of gravity placement.
Typically, aerodynamic gains can compromise forgiveness or launch characteristics, but the weight savings from the Split Mass Frame allowed engineers to preserve preferred CG locations.
New Speed Sync face
The new Speed Sync Face design is engineered to improve ball speed retention across a larger portion of the face. A reinforced perimeter structure helps maximize face deflection and COR on centered strikes, while the upper portion of the support ring is opened up to increase speed on high-face impacts, a common strike location for many golfers. The face also features a variable thickness design to preserve speed and performance across a wider impact area.
Expanded adjustability
Each GTS model includes a dual-weighting system to fine-tune launch, spin, and shot shape more precisely than previous generations. GTS2 uses interchangeable forward and aft weights, while GTS3 and GTS4 combine a rear weight with an adjustable forward track weight system.
Tour-inspired face graphics
The new lineup features redesigned high-contrast face graphics to improve alignment and framing at address, according to Titleist. Sharp visual lines are designed to make it easier to center the golf ball and to perceive loft more easily at setup.
Additional model details
GTS2
- The GTS2 is the most forgiving model, designed for golfers seeking maximum stability and consistent speed across the face.
- It produces high launch with mid spin and features a larger, confidence-inspiring profile behind the ball.
- Standard weighting includes an 11-gram forward weight and a 5-gram rear weight, with additional fitting configurations available.
GTS3
- The GTS3 is aimed at players who want more control over launch, spin, and shot shaping.
- Compared to GTS2, the GTS3 offers lower launch and spin while featuring a more compact profile and deeper face design preferred by many stronger players.
- The head features an adjustable forward-track weight system to further fine-tune center of gravity placement.
GTS4
- The lowest-spinning option in the lineup, GTS4 is built for golfers looking to reduce excessive spin and maximize total distance.
- Unlike previous “4” models from Titleist, the new GTS4 features a full 460cc profile that improves forgiveness and stability while retaining its low-spin DNA.
- Like GTS3, it includes a forward track weighting system for precise fitting adjustments.
What Titleist says
“When we talk about driver design, it’s never about the one feature or benefit — it’s about all of them,” said Stephanie Luttrell, Titleist’s Senior Director of Metalwood R&D. “Ball speed, forgiveness, spin stability, adjustability, exceptional sound and feel… these are all attributes that golfers care about. It’s our job to design a lineup that elevates performance across the board without sacrificing in key areas, and we feel we’ve done that with GTS.”
“We know that forward CGs drive speed with great launch and spin characteristics, but you need to be able to do that with an inertial stability that still preserves ball speed, launch and spin consistency on off-center hits,” Luttrell said. “We’ve never before been able to hit these CG positions and inertia properties at the same time, and we’re achieving that because of GTS’ construction.”
Club Junkie’s take
I feel like every time there is a new Titleist wood release, I figure they can’t outdo their previous driver. And every year, I am wrong and impressed with the performance. The GTS fits right into that narrative again, as I didn’t know where Titleist could go from GT, but they pushed the limits again, and my fitting proved the smart people there found ways to improve.
My past four Titleist drivers have been a 2 series as my swing typically requires a little height, spin, and forgiveness so I figured I would just get a new GTS2 and be on my way. During the fitting, I was impressed by the new GTS construction, its added PMP material, and the advanced adjustability on each model. My fitter, Joey, got to work putting together a GTS2 and we started there. The launch and spin were great, and the consistency on misses was very tight. My average ball speed with the GTS went up a little bit as the new Speed Sync face creates more speed away from the center.
Joey then built up a GTS3 in 11 degrees, but I figured this wouldn’t have the stability I needed for tight dispersion on my miss hits. That thought was quickly erased after a few shots, and I really liked the more center start line and reduced draw on the misses I was seeing. We tried a few different settings and shafts to dial in the details in order to get the best fit. Having a forward and rear weight in the head allowed Joey to set up the GTS3 with a heavier rear weight to keep the launch and spin up, while the Sure Fit hosel set flat created a more center start line for me. My misses were not nearly as far left, and I was really impressed with the consistency on the spin and launch when I didn’t hit it in the center.
Titleist again created a wood line in GTS that delivers improvements over previous drivers while keeping the traditional look and feel you expect. More adjustability, better off-center speed, and 3 drivers that are playable over a wider range of players should make these extremely successful in fittings.
Pricing, specs, availability
GTS2 lofts: 8, 9, 10, 11 degrees (RH/LH)
GTS3 lofts: 8, 9, 10, 11 degrees (RH/LH)
GTS4 lofts: 8, 9, 10 (RH/LH)
Featured shafts
- Project X Titan Black
- Mitsubishi Tensei 1K White
- Mitsubishi Tensei 1K Blue
- Mitsubishi Tensei 1K Red
Premium shafts
- Graphite Design Tour AD DI
- Graphite Design Tour AD VF
- Graphite Design Tour AD FI
Available for fittings and pre-sale now.
In golf shops worldwide beginning June 11.
Price: $699 (standard), $899 (premium)
Titleist has today introduced its new GTS2 and GTS3 fairways.
Lower and deeper center of gravity (CG) positions, new adjustable heel-toe weights and advanced clubface innovations drive total performance in the two tour-proven models.
- Tour-inspired polished clubfaces: To help players see more of the clubface at address.
GTS2 Fairway
The new GTS2 fairway is designed with a shallower face and a larger profile than GTS3, ideal for players with more sweeping deliveries with their fairway metals.
GTS2’s new face height, inspired by tour feedback, was designed shallower than the prior generation GT2 model and more in line with the GT1 fairway. Each loft in GTS2 leverages a shallower profile except for the 13.5-degree, which maintains a slightly taller face.
With its new dual-weighting system, the ‘2’ model now has heel-toe CG adjustability.
Lofts: 13.5, 15.0, 16.5, 18.0, 21.0
Dual-weight system: 11-gram weight in heel, 5-gram weight in toe (standard)
GTS3 Fairway
The new GTS3 fairway is designed with a deeper face and a more compact profile, ideal for players who hit down on the golf ball more with their fairway metals.
New to the GTS3 family is a 21-degree offering, giving players two distinct profiles in Titleist’s 7-wood loft.
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Pingback: New mp-4 and mp-54 irons unveiled at the open championship | Mizuno Golf EU
Jacob
Aug 13, 2013 at 9:15 pm
Best blades, Titleist 681 and Hogan Blades from 1999. Hands down
Tempo Power
Aug 14, 2013 at 9:12 pm
Brilliant looking clubs. Even better photography. I need that guy to photo my Apex 53 blades for E bay.
Jericho
Jul 31, 2013 at 8:03 pm
Im a 1 hc, Told myself if I shoot 5 rounds in the 60’s I’m treating myself to some new sticks, broke 70 3 of my last 15 rounds, 2 more rounds to go …making room in the bag baby! MP4’s come to papa
Bossman
Jul 28, 2013 at 2:49 pm
Is the MP 54 the new MP 53? I love my MP 53’s but the 54’s are calling to me! Just wish I had the game for the shiny bling 4’s. 🙁
george
Jul 25, 2013 at 8:50 pm
nice irons – sort of look like the bridgestone xblade 705s , but more streamlined , hey wait im not gonna get equipment happy , im headed to the range work on what really matters a reliable swing
GGWolverine
Jul 19, 2013 at 6:29 pm
I hope i’m wrong but does the MP54’s look chunky?
Tom
Jul 19, 2013 at 3:28 am
Play what ever YOU feel most comfortable with. You’re right, some tour players use “game improvement” clubs, while others are pure blades. Some want all the forgivness they can get, while others are pure “feel” and hit the middle most all the time, but need to know when they are off just a bit. Like Arnold’s commercials, “…play your swing”, play your club for your feel and what works for YOU. If we were all as good as we wanted to be, hoped to be, or thought we were, The Tour would be a VERY crowded place. And Mizuno DOES make one of if not the best feeling irons. Everything I have in the bag says Titleist, excep the Mizzy irons that I can’t seem to part with. Yet
tonyk
Jul 18, 2013 at 4:18 am
MP54 looks like a mixed version of MP 64 and MX300. Beautifully done.
t120
Jul 17, 2013 at 8:30 pm
yes, and yes. Holy crap they are both so awesome looking.
reggie jaggers
Jul 17, 2013 at 3:42 pm
No one makes a blade iron as pretty as Mizuno. I’ve played Mizzy’s since I started playing golf in ’94 and I’ve had my JPX 800’s for awhile now so these are tempting me to no end. I’ve always somehow hit blades much better than cavity backs, not sure why but even long irons down to the 2 iron. Beautiful, I’m sure these will pop a grand.
Tee
Jul 18, 2013 at 2:33 am
So why are you playing the game-improvement JPX 800 then? You funny or sumthin’? Somehow hit blades? Stop lying and put away your fake bravado. Stick to your game-improvement irons.
Brian
Jul 18, 2013 at 3:10 am
What’s wrong with a good player playing game improvement irons? I’m a 2 handicap and I play AP1.
Jack
Jul 19, 2013 at 4:27 am
I’m not sure why if he can hit the blades better then why he didn’t switch. I think he probably means he hits the best shots better? He lost me at a blade 2 iron though. Where do you even find a JPX 2 iron to compare it to. Or a 2 iron blade. Mind->Blown
Drew
Jul 17, 2013 at 1:12 pm
Nice finish, but how many time are they going to make the same iron?
Don
Jul 17, 2013 at 11:31 pm
As a PGA Profesional of 20 years, Mizuno ambassador and fitter of 12 years your combo looks great. Would suggest the 3/4 in the H4. I see tour bags on a regular basis, and your makeup is the norm. Play smart, play hard.
Don
Jul 17, 2013 at 11:32 pm
When you make perfection. Where do you go?
Ryan
Jul 17, 2013 at 1:06 pm
I know I’m not good enough to hit the MP-4’s all the way through the set but those are sexy!
Mark
Jul 17, 2013 at 5:12 am
Look just like MacGregor 67 VIP/Muirfield/93 VIPs. Those were legendary irons and these will probably do just as well.
Jack
Jul 17, 2013 at 2:44 am
3-PW set of
3-4 JPX 825 Pro
5-6 MP-54
7-8 MP-64
9-P MP-4
sssweet~!
Would look pretty strange in the bag though.
jim
Jul 17, 2013 at 11:32 am
loft gap city
Trey
Jul 17, 2013 at 3:57 pm
mizuno loft and lies are consistent through all there mp lines just the 825 pros would be a degree stronger
Colin
Jul 17, 2013 at 11:57 am
No 3 iron in the JPX 825 Pro.
Physicist
Jul 18, 2013 at 1:41 am
Replace the JPX’s with H4’s and would look like a much more cohesive set
MattSihv
Jul 16, 2013 at 11:06 pm
Wow! Wish they made more left-handed irons… I may have to switch sides.
Dolph Lundgrenade
Jul 19, 2013 at 11:33 pm
I wish we were all left-handed so I didn’t have to read this comment on every new release forum.
Harry
Jul 16, 2013 at 10:41 pm
Wow wow wow! Wish I had waited for these
Harry
Jul 16, 2013 at 10:40 pm
Wow wish I has waited on these guys just got fitted for ping 25s
J
Jul 17, 2013 at 9:51 am
I don’t think you’d want to go for one of these clubs if you are using those chunky G25s…
jim
Jul 17, 2013 at 11:33 am
haha…. some folks have no clue
Blanco
Jul 17, 2013 at 6:14 pm
wurd.
“if you’re using x-brand of ‘shovel’ iron… it means you have serious swing flaws and that my Mizuno chromey bladez would eat you for lunch with their prestigiously smaller sweet spot.”
jason
Jul 17, 2013 at 8:36 pm
Wow you sound like a prick. I know two scratch golfers that game G25’s and AP1’s. Those are both game improvement irons. It’s still about getting the ball into the hole in the least amount of strokes. Doesn’t matter what kind of club gets it there.
HackerDav
Jul 18, 2013 at 5:49 pm
@Blanco – Let us know when you make the tour. Or when the size of your manhood isn’t contingent on the flawlessness of your golf swing.
Dolph Lundgrenade
Jul 19, 2013 at 11:31 pm
Again, you can’t be serious. “I’m either going to fly Southwest or I’ll take a private G5 Gullwing.”
Game improvement G25’s and blades aren’t competing for your business.
Blanco
Jul 16, 2013 at 8:32 pm
Shwing///
bert
Jul 16, 2013 at 5:32 pm
Are they chrome? I hope not!
T
Jul 16, 2013 at 6:06 pm
Are you blind? I guess so!
jgpl001
Jul 16, 2013 at 5:09 pm
OMG – I just wet my pants!
WOW – those MP-4’s are STUNNING,, just STUNNING
I was waiting for the 714 MB’s, but the choice has been made for me
Dolph Lundgrenade
Jul 19, 2013 at 11:29 pm
Really? Your choice was between once-stamped “forged” Titleists and the king of off-the-shelf multi-pressed forgings from Mizuno?
“Yeah, I’m looking into a new car. I’m either going with Hyundai(insert cheap rip-off car) or the Aston Martin(insert quality hand-made car such as BMW/Ferrari/Bugatti/Bentley).”
Go with the Titleists. Mizuno isn’t for you.
Jeff
Jul 16, 2013 at 3:56 pm
I think I know where the MP4’s sit.
However, would the MP 54’s sit between the MP 64 and the JPX 825 Pro, in terms of playability/forgiveness/offset?
alex
Jul 16, 2013 at 4:45 pm
rumor has it these sets sit on either side of the 64s respectively
Jericho
Jul 16, 2013 at 3:43 pm
MP4’s look moist.. a satin finish would work
T
Jul 16, 2013 at 6:05 pm
No, it wouldn’t. Satin sucks.
DPC
Jul 17, 2013 at 12:55 pm
agreed. Satin does suck.
John
Jul 17, 2013 at 2:50 pm
Chrome sucks. Looks tacky
christian
Jul 19, 2013 at 6:39 am
Agree, Satin blades are the only way to go. Chrome looks cheap
T
Jul 20, 2013 at 12:03 pm
Yeah satin look so tacky even Tiger Woods has never played stain. Doh!
Jon
Jul 16, 2013 at 3:39 pm
drool.
maxx hotton
Jul 16, 2013 at 3:06 pm
release date?
Dolph Lundgrenade
Jul 19, 2013 at 11:42 pm
early October release date- good source
mark
Jul 25, 2013 at 3:27 am
Just found out today from Mizuno.
MP 54 will start shipping on 9/9/2013.
benja
Aug 1, 2013 at 4:38 pm
any specific regions?
Jeff
Jul 16, 2013 at 2:04 pm
i think they’re running out of numbers…
moskimojo
Jul 18, 2013 at 1:55 pm
Couldn’t agree more! its getting ridiculous. Even the fellas at PGA Superstore & GolfSmith are mixing up what is what is what is what.
Dolph Lundgrenade
Jul 19, 2013 at 11:40 pm
I was curious, as I knew the new muscleback irons were coming this year, if they would go with MP70 or something different. MP4 is a shock, but I’m happy to have less stamping on the back. My MP33 2-iron is the prettiest club in the bag(in the bag only at courses that it would play well) and it just has “mizuno” and “mp33” stamped on the back which gives it a cleaner look. I wish they’d just drop the runbird logo, but this looks cleaner than the mp69’s somehow.
Play blades or play nike-made!
Woody
Jul 16, 2013 at 2:00 pm
I think I may need a new pair of pants after seeing those. Mizuno continually produces some of the best looking/best performing irons in the industry. Can’t wait for these to hit the shelves