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UST Mamiya Dart V iron shaft review – Club Junkie Reviews



Recently, graphite iron shafts have grown in popularity as technology has taken giant leaps forward. The old thoughts of graphite being too soft, too high launching, or too inconsistent have gone by the wayside. This new batch of graphite iron shafts has been played by all levels of golfers, from players who do need help with launch and spin to professionals who are looking for added control.

Today, we’re taking a look at one of these “new graphite iron shafts.” UST Mamiya Dart V irons shafts come out of the company’s TSPX Lab that creates the most cutting-edge designs and uses the latest materials.

Check out the full review on YouTube below or on any podcast platform.

UST Mamiya’s Dart V shafts are designed around Dual Action Recoil Technology that makes sure the entire shaft flexes consistently for much tighter shot dispersion. The Dart V shafts are offered in 90, 105, and 120-gram weight options to fit a wide range of golfers. UST Mamiya also has very tight tolerances and quality control to ensure that every shaft is the same in the set. Utilizing Torray M40X carbon fiber gives the engineers a material that is 30% better tensile strength and gives the shafts better feel with less harsh vibration.

I went with the Dart V 105 F4 (stiff) shafts as I have found more success with lighter shafts as I have gotten older. Building these shafts up with a set of Vega Mizar Tour heads was very easy and didn’t take a lot of tip weights. I think the 7-iron needed a small 2g tip weight and the rest were installed without any weight at my desired D1 swing weight at standard length with standard size grips.

Out on the course, the first thing I noticed was how tight the Dart V 105 feels. Every swing feels like the shaft is under complete control, no matter if you take a partial or went after it. Stout is a great term for the shafts as they definitely play true to flex, but they aren’t harsh feeling. While the Dart V plays stiff, it still does a good job of reducing vibration and keeping joints or injured body parts free from additional shock.

You can feel the shaft load during the transition to the downswing, but it has a stiffer feel of less flex than some other graphite shafts. Some players like this boardier feel and will get it with the Dart V. Feel at impact is similar to the loading where you are going to feel some kick at the bottom of the swing, but it won’t be as aggressive as other shafts. On center strikes the Dart V offers a very solid feel with great, soft feedback. When you mishit shots with these shafts you get immediate feedback with some additional vibration that feel players will really like. The mishits aren’t too harsh on the hands but still let the head give you the louder click that your ears will want.

Ball flight for me was lower than I expected with UST Mamiya listing the shaft as more mid-launch. I would consider my launch with the Dart V mid-low launch with a more penetrating flight. Better players will like the ability to flight shots, with any club, higher or lower in order to get the ball close to the hole. The penetrating flight helps in windy conditions as it offers a stable trajectory that doesn’t waver from your aiming point.

Shots that you mishit off the toe or heel go pretty straight and you don’t see big curvature that causes you to really miss the green. Most of those misses come off the face fairly straight and leave you with a fairly easy chip or pitch shot to the green. Distance control is consistent and repeatable as I found on the range that well-struck shots have a very tight carry distance window and I have yet to see some wildly long or short shots show up.

Overall, the UST Mamiya Dart V iron shafts are solid options for players who are very particular about performance. Like other shafts among the new breed of graphite iron shafts, the Dart V delivers the type of shots you need when you need them.

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I have been an employee at GolfWRX since 2016. In that time I have been helping create content on GolfWRX Radio, GolfWRX YouTube, as well as writing for the front page. Self-proclaimed gear junkie who loves all sorts of golf equipment as well as building golf clubs!

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Product Reviews

GolfWRX member testing: L.A.B. Golf DF3 putters



Like L.A.B. Golf’s larger DF 2.1 putter, the new DF3 is “fully automatic.” That means golfers will get the full experience of DF3 wanting to guide itself on the correct path on the way back and through. This is possible thanks to L.A.B. Golf’s patented Lie Angle Balance technology. The technology creates true zero-torque putters that stay square by themselves. Golfers can trust that L.A.B. Golf putters will return to square without any need for manipulation.

How we choose our testers

GolfWRX staff evaluates each entry against the criteria laid out in the testing thread to determine the best fit for each specific product — For example, if a game-improvement iron is being tested, game-improvement iron-playing golfers will be considered.

Overall tester feedback

Overall, our testers were impressed with the ease and precision of the remote-fitting process with its custom options. On the whole, even those skeptical about the DF3’s shape enjoyed the ease of alignment and consistent delivery of putter to ball, with some testers pointing to an initial “adjustment period.” Those who had played previous L.A.B. creations universally praised the improved feel of the DF3.

What our members said


“I try to take a lighter grip typically when I putt or at least when I am putting my best. I can do that for the most part BUT it is on the shorter putts lately where the grip gets a little tighter at times. The one thing I tried to focus on, after watching some videos Sam has putt online about how to putt with his putters, was to not feel pressure in my thumbs during the stroke and let the putter swing more freely. When you do this, this putter just wants to rock back and forth. Let the putter/tech do the work for you without your brain trying to telling to manipulate the face in any way. It was a different feeling not having that “torque” working against your hands in the feel of the stroke.”


“At this point, I feel completely confident with this putter. I have never seen the ball roll this consistently end over end on my start line. It has made me realize that I definitely have a bit of work to do in the green reading department, but what’s really nice is that it never leaves me guessing. When I watch the ball start on my line and roll perfectly end over end, it is at least nice to be able to definitively say “oh I just misread that” while taking out almost every other variable.”

“Also for whatever reason people find the gimme getter so hilarious. It’s always just “oh cool that picks up balls?!”…Unless something wild happens this putter will be staying in the bag for the foreseeable future including the tournament schedule over the season, I’ve got almost nothing bad to say about it.”


“It’s everything I hoped it would be. I’m very happy I went with the heavier head option, I fear the standard weight would have felt a touch too light for my taste. So shout out to Calvin for being spot on there. At the current weight, I can have a light grip pressure and let gravity do the work. The head just feels incredibly stable and amazingly solid. Speaking of grip, I really debated what grip to go with and the Press Pistol seems like a great choice. The grip feels very versatile for different putting styles, maybe a bit less so for left hand low (imo). I’m mostly a “2 thumbs” guy but have gone back and forth with left hand low as well as claw. The grip tapers down to a smaller flat oval at the bottom. I didn’t love it for left hand low, but for a claw style grip it is really really good.”


“This putter isn’t going to magically turn a poor putter in to Brad Faxon on the greens. But what I can say with confidence is that removing the excessive face rotation from the putter makes creating a repeatable, consistent stroke infinitely easier to obtain. If you’ve been wanting to try a LAB putter, this is the one truly worth taking the dive on in my opinion. Having never been completely blown away with the Mezz or DF 2.1, this putter has really changed my opinion. I’ve always been really intrigued by the technology, and completely buy in to the concept, but I’ve never been able to get past what I perceived to be less than stellar looks, sound and feel. LAB, in my opinion, has address and improved on all of those things. While this putter still looks far from conventional, it did not take long to get comfortable with the look or footprint. It’s not overly obnoxious in size and sets up so well behind the ball.”


“As far as consistency, it’s ridiculous. You can hit these putters ANYWHERE on the face and the ball rolls end over end. And whether you hit it in the middle, on the toe, or on the heel. The balls roll pretty much the same distance, easily within 6″ of each other.”

“LAB really did a great job with the new smaller size as well. The DF 2 always felt like I was putting with a branding iron. The DF 3 is a perfect compact size and very easy to look down at.”

“The DF 2 I had was an armlock putter. So my only concern with the DF 3 was the grip. I have never been a hands pressed forward putter. It was recommended to me to go with the Press II 1.5* grip so I did. Went with the textured grip and it is perfect. I putt with the pencil grip and my hands are very comfortable.”

“As much as I love the roll that the PXG milled face putters (which I’ve been using for years) put on the ball the DF 3 is even better. Can’t believe I’m saying this but you will soon see my PXG putter on the BST.”

Member review themes

  • Ease of remote fitting process
  • Putter stability
  • Surprisingly good sound and feel
  • Ease of getting a putt on line
  • Ease of alignment

Check out the full review thread here.

More about GolfWRX member testing

Member testing gives our forum members the opportunity to put the latest golf equipment through the paces. In exchange for getting a product to test (and keep), forum members are expected to provide in-depth product feedback in the forums, along with photos, and engage with the questions of other forum members.

For brands, the GolfWRX member feedback and direct engagement is a vital window into the perceptions of avid golfers.

You can find additional testing opportunities in the GolfWRX forums.


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Product Reviews

Mitsubishi Diamana putter shaft review (P105 1.0 flex) – Club Junkie Reviews



When you hear the Diamana name, you immediately think of the current, or legendary, wood shafts that have been winning on tour for 20 years. However, few die-hard club junkies would think of a Diamana putter shaft, but Mitsubishi Golf is always pushing the limits and are delivering just that.

Graphite putter shafts have been a growing segment in the equipment world with companies noticing that they can create ultra-stable putter shafts that keep the putter on target through the stroke. Graphite also gives engineers the ability to adjust the performance, stiffness, and weight so golfers have more options to dial in the feel of their putter.

To get the full, in-depth review of the Mitsubishi Diamana P105 putter shaft check out the Club Junkie podcast on all podcast platforms or on YouTube.


Out of the box, the Mitsubishi Diamana P105 might be the best-looking putter shafts I have ever seen. The carbon weave at a 45-degree angle just reflects the light well, and then the shaft fades down into black near the tip section. A Diamana staple, the flowerband, is located just a little way under the grip but high enough up where it isn’t a distraction when looking down at the putter.

I installed the P105 into the new Bettinardi BB1 Wide putter, and it looked perfect with Bettinardi’s diamond black finish. The duo is definitely one of the meanest-looking combos in my rotation of putters. Both the P105 and the P135 are built using premium carbon fiber with a low amount of resin for added touch and feel. Mitsubishi utilizes 24t and high-strength intermediate modulus carbon fiber to build up the strength and stability, while the visible 6K woven fabric helps reduce torque.

The first question I get with this shaft is about the 108-gram weight. People areasking if it is too light. Honestly, if the shaft had no markings on it, I don’t know if I could tell that is was lighter than a traditional steel shaft. Now the head might feel a touch heavier and the balance of the putter slightly lower but I didn’t really notice the overall static weight of the putter being too light.

The P135 shaft comes in two flexes, 1.0 and the stiffer 2.0, but the P105 only comes in the 1.0 flex. To me, the P105 might be one of the softer graphite putter shafts I have tried and you can see a little bit of wiggle when you waggle the putter. Some players like a slightly softer putter shaft for additional feel and it can work with the tempo of their putting stroke.

On the course, the Diamana P105 offers the consistent stability that you expect from aftermarket putter shafts. On short putts the shaft stays right with your stroke and the putter head is always where you expect it, aligned with your hands and grip. Shorter strokes don’t show off the slightly softer flex of the shaft and you experience the added control of the low torque design.

When you hit longer lag putts you can notice a little flex in the shaft but the head never waivers from being square to your target. Speed control didn’t change at all from the traditional steel shaft in the Bettinardi to the Diamana. On the practice green hitting multiple putts at the same hole, it was easy to feel like you hit the correct speed and then see the results. Balls ended in the same area, as well as my skill would allow, and I never hit a ball the felt like it came up far shorter or longer than I expected it too.

Feel is such a subjective thing and each golfer is going to react differently to it. For me the Diamana had a slightly firmer feel than some of the other graphite shafts out there. If you are looking for responsiveness out of your putter shaft, the Diamana offers just that. To me the Diamana has more of a steel feel to it when it comes to getting the vibration from impact to your hands. You will feel exactly where you made contact on the face, giving you the ability to adjust your stroke and get back to making more center contact. I have found that most other graphite shafts mute the vibration a little and offer a softer feel, but the Diamana keeps the feel and sound exactly as they are.


Mitsubishi’s Diamana putter shaft is a great option for the golfer who wants to add some stability and consistency to their stroke without sacrificing feel. Players who love a specific putter face material or milling pattern to enhance their feel will be excited to not lose that with the upgrade to the Diamana.

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Project X Denali Blue, Black shaft Review – Club Junkie Review



Originally, Project X was known for low-spin steel iron shafts. However, the company might now be known for wood shafts. Denali is the newest line of graphite shafts from Project X. With the Denali line, the company focuses on feel as well as performance.

There are two profiles in the Denali line, Blue and Black, to fit different launch windows. Denali Blue is the mid-launch and mid-spin profile for players who are looking for a little added launch and Denali Black is designed for low-launch and low-spin. Both models are going to offer you a smooth feel and accuracy.

For a full in-depth review check out the Club Junkie podcast on all podcast streaming platforms and on YouTube.

Project X Denali Blue

I typically fit better into mid-launch shafts, as I don’t hit a very high ball so the Denali Blue was the model I was more excited to try. Out of the box, the shaft looks great and from a distance, it is almost hard to tell the dark blue from the Denali Black. With a logo down install of the shaft, you don’t have anything to distract your eyes, just a clean look with the transition from the white and silver handle section to the dark navy mid and tip.

Out on the course, the Blue offers a very smooth feel that gives you a good kick at impact. The shaft loads easily and you can feel the slightly softer handle section compared to the HZRDUS lineup. This gives the shaft a really good feel of it loading on the transition to the downswing, and as your hands get to impact, the Denali Blue keeps going for a nice, strong kick.

Denali Blue is easy to square up at impact and even turn over to hit it straight or just little draws and most of the flex of the shaft feels like it happens right around where the paint changes from silver to blue. The Blue launches easily and produces what I consider a true mid-flight with the driver. While it is listed as mid-spin, I never noticed any type of rise in my drives. Drives that I didn’t hit perfectly were met with good stability and a ball that stayed online well.

Project X Denali Black

When you hold the Denali Black in your hands you can tell it is a more stout shaft compared to its Blue sibling by just trying to bend it. While the handle feels close to the Blue in terms of stiffness, you can tell the tip is much stiffer when you swing it.

Denali Black definitely takes a little more power to load it but the shaft is still smooth and doesn’t give you any harsh vibrations. Where the Blue kicks hard at impact, the Black holds on a little and feels like keeps you in control even on swings that you try and put a little extra effort into. The stiff tip section also makes it a little harder to square up at impact and for some players could take away a little of the draw from their shot.

Launch is lower and more penetrating compared to the Blue and produces a boring, flat trajectory. Shots into the wind don’t rise or spin up, proving that the spin stays down. Like its mid-launch sibling, the Black is very stable and mishits and keeps the ball on a straighter line. Shots low off the face don’t get very high up in the air, but the low spin properties get the ball out there farther than you would expect. For being such a stout shaft, the feel is very good, and the Denali Black does keep harsh vibrations from your hands.

Overall the Project X Denali Blue and Black are great additions to the line of popular wood shafts. If you are looking for good feel and solid performance the Denali line is worth trying out with your swing. Choose Blue for mid-launch and mid-spin or Black for lower launch and low spin.

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