Mitsubishi Diamana Putter Shaft Review

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The Mitsubishi Diamana Putter shafts bring the classic smooth Diamana feel to the putting green.  Two weights and two flexes create a lot of fitting options.


Over the last couple years, high performance putter shafts have gone from the new hot thing to an established part of the golf equipment scene.  In both steel and graphite, every major shaft maker has entered the fray trying to help golfers find more success on the greens.

The Mitsubishi Diamana Putter shaft trades on one of the most esteemed names in golf while offering players different weights and flexes.  I tested the entire line to see how much shaft fitting can add to your putting.


Much like their MMT Putter Concept shaft [review HERE], the Mitsubishi Diamana Putter shaft has a unique look without screaming for attention.  At a glance, it’s gloss black from butt to tip.  A closer look reveals the visible 6K carbon fiber weave.  The weave turns into a solid black finish about 9″ from the tip to keep the address look distraction-free.

Of course, this wouldn’t be a Diamana shaft without the signature flower band.  That sits just below the grip, above the “Diamana” branding and weight and flex designations.  Overall, I think Mitsubishi nailed the look, making the Diamana Putter shaft distinct from steel while remaining understated.


The Mitsubishi Diamana Putter shaft comes in two weights and two flexes.  The P105 has an uncut weight of 108 grams, and the P135 weighs 138 grams.  Mitsubishi offers the P105 in the softer 1.0 flex and the P135 in both 1.0 and 2.0.  I tested all three in identical Swag Handsome One putter heads [review HERE].

I found that the Diamana Putter P135 2.0 was the most like other premium graphite putter shafts.  It felt very stable during the stroke and held the putter head steady on mishits.  As I’ve found with other graphite putter shafts, the Diamana Putter also cleaned up the feel of impact, eliminating excess vibrations.

In terms of impact feel, the Diamana Putter P135 1.0 was my favorite.  I felt that it created the softest impact sensation, though the differences between the three are fairly small.  During the swing, the 1.0 is noticeably different than the 2.0, but it’s not loose or whippy.  If someone handed me the 1.0 by itself, I would have said that it felt smooth but not significantly more flexible than a traditional putter shaft.

Finally, I found that the Diamana Putter P105 1.0 delivered the crispest impact feeling.  I had the sense that it was a little more flexible than the P135 1.0, but it’s impossible to definitively separate the flex from the weight.


As with most high quality graphite putter shafts, the tech story behind the Mitsubishi Diamana Putter shaft centers on low torque.  Per Mitsubishi, the 6k woven carbon lowers the torque of the shaft which helps it to deliver the putter head more consistently and perform better on mishits.  The differences between Diamana Putter and a traditional steel shaft are measured in inches – sometimes fractions of an inch – but those add up on the green over the course of a round or a season.

To me, the bigger story with Diamana Putter is the fitting options.  If you’ve never experimented with putter shaft weight, I’d implore you to do so [Golf Myths Unplugged took on putter shaft weight HERE].  The weight difference between the P105 and P135 is immediately obvious, and it had a major impact on my putting.  With the P105, I felt freer, especially on long putts. The putter swung more easily.  For me, swinging the P135 could feel a little laborious, and I got nervous about hitting long putts too hard.  I want to emphasize that these are my reactions to the shaft weight, and they may be completely opposite of yours.

The difference in flex was not as dramatic as the weight difference, but it still affected my results.  With the P135 1.0, I felt like some of the additional weight was negated by the smooth feel.  The shaft doesn’t kick or add energy, but it feels like it has a little life to it.  With the P135 2.0, I got out only what I put in, and the putter head was rock solid throughout the entire stroke.  For me, the 1.0 was the better fit, but other players may prefer the stability of the 2.0.

All three models of the Mitsubishi Diamana Putter shaft have a .355 tip diameter.  The butt diameter varies slightly, with the P135 1.0 at .595″, the P105 at .596″, and the P135 2.0 at .602″.


If you’re looking for a way to breathe new life into your flat stick, the Mitsubishi Diamana Putter shaft is definitely worth a try.  The quality and smooth feel are exactly what you expect from Diamana, and the different weights and flexes give you room to experiment and find your perfect fit.

Visit Mitsubishi Golf HERE

Matt Saternus
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  1. Thanks, Matt for reviewing this putter shaft. The follow-up question I have is whether it is only available for plumber neck hosel putters. The MMT putter shaft specifies plumber neck hosel putters only, but there is no similar notation on the Mitsubishi website for the Diamana. Given the Diamana is .335 taper tipped I assume the requirement is similar to the MMT but would appreciate your insights. Thanks…

  2. lyle Miller

    Hi Matt, I have often thought about trying the non-metal type shaft for the putter, I have instock a number of types of shafts, the weights are from 50gr-120gr, senior, mid, and stiff, what do you recomend I start with? I have the correct machinery to replace shafts/heads. thank you

    • Matt Saternus

      It seems like you’re looking at putting a graphite iron shaft into your putter, is that correct? I have not seen any graphite putter shafts that are as light as you describe or with the flex designations you mention.



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