Miyazaki B.Asha Golf Shaft Review


By Tony Curro
Tru-Fit Custom Clubfitters, Latham, NY


Miyazaki released the B Asha Series of shafts in 2013 as an upgrade to the popular C.Kua line.  This line of shafts offers a lightweight shaft with incredible stability.  The 3R and 3S models come in a .350 tip.  The rest of the line has the traditional .335 tips.  The brown logo artwork which is a trademark of Miyazaki really stands out on the white background of this shaft.  The handsome graphics are original artwork painted specifically for the B Asha line of golf shafts.

MiyazakiFlexCodeMiyazaki Golf shafts are labeled according to an international flex code.  This code give a four digit number which explains the level of flex in each of the 4 regions of the shaft.  These regions are the Butt, Mid-Butt, Mid-Tip, and Tip.  Each of these regions are rated on a scale of 0-9 with 0 being the most flexible, and 9 being the stiffest.  A shaft code of 9842 would have an extremely stiff butt and Mid-butt region, and mid stiffness through the mid-tip region and a flexible tip.   These flex-codes help fitters match the bend profile of a shaft to a specific golfer type, or desired ball flight. The B.Asha Line of Miyazaki shafts varies in range from 46-48 grams in the 3 series, to 54 grams in the 4 series, 61 in the 5 series, and 75 in the 7S.  These are the lightest shafts that Miyazaki offers, and are ideal for Ladies and Seniors.  These lighter weights are ideal for golfers looking for a higher launch without sacrificing distance. In the B.Asha model, the torques of these lighter weight shafts were reduced from the C.Kua.

DevotedGolfer.tv editor Russ Ryden got to talk to Tim Gilles, Director of Sales for Miyazaki Golf Shafts at the 2013 PGA Merchandise show in Orlando. Part of that discussion covered the changes made to the Miyazaki B.Asha Golf shaft.

Looking at the bend profile of these shafts, they promote an active tip, especially in the 3R and 3S models.  Again, these are .350 tips, and do provide a stable tip section despite their super-lite weight characteristics.  The tip action promotes higher launch conditions without ballooning.  The 3 series maintain their flexible characteristics through the mid-tip, Mid-Butt and through the butt sections.  The international flex codes for the 3R (4222), and 3S (5433) models indeed give these shafts much more action in the tip and mid-tip sections.  In our range testing sessions, these shafts indeed launch the ball higher, but not at the expense of spin rates that were off the charts.  The higher launch coupled with lower spin rates from comparable shafts give these shafts a huge advantage in maximizing distance. We have found that the 3A and 3R shafts are ideal for Women and Senior’s who are slower swinging golfers looking to max out their distance.



The 4 series promote a stiffer mid-butt and butt section, with an active Mid-tip and tip region.  The flex codes for the 4A thru X series are as follows:  A(3411), R(5621), S(6732), X(7854).  The 4 series varies in weight from 47g to 53g and is ideal for golfers looking for a lightweight shaft that really launches the ball.  In range testing, these lighter weight shafts proved beneficial to golfers who have smoother transitions to the ball.  The Lower to mid stiffness rating in the A and R models coupled with higher torque in the Butt section and tip give the golfer plenty of feel in this lightweight model.  In Range testing, the model proved true to form.  Golfers really benefited from the softer feel of these shafts, resulting in more consistency off the tee.  Golfers with higher swing speeds who were looking for higher launch conditions seemed to really benefit from the stiffer models.

The 5 and 7 series are meant for golfers who have higher swing speeds looking to maximize ball Speeds off the tee.  The Stiffest models 5X and 7X have flexion codes of 7785.  These shafts maintain stiffness through the mid-tip region allowing for an extremely stable shaft that enables a higher launch with lower spin.  Range testing has verified this and golfers tested felt that the stability these heavier/stiffer models allowed them to” lean on it”, without feeling they were losing the shaft at the top.  On average, the golfers tested gained 15+ yards in distance without sacrificing dispersion.  That is huge when explaining the difference in a stable aftermarket shaft.


Miyazaki has hit a virtual home run with their newest line of shafts.  The handsome graphics and colors really stand out, without being over the top.  From a performance standpoint, they do as advertised,

Miyazaki C.Kua Hybrid Golf Shaft Review

Miyazaki C.Kua Hybrid Golf Shafts

By Russ Ryden, A Golf Digest America’s 100 Best Clubfitter
Fit2Score, Dallas Fort Worth, Texas

Hybrid CKua imageThe Miyazaki C.Kua hybrid shaft comes in two designs, the 59 and the 83.  The light weight 59 gram version is designed for a high launch.  Torque ranges from 3.9 in the 59A to 3.6 in the 59X.  Tjhe Miyazaki C.Kua 83 hybrid shaft is designed for stronger players and has a mid launch profile.  The torque ranges from 2.8 in the 83R to 3.0 in the 83S.  Shaft to shaft linear consistency is excellent. Radial consistency is excellent, the shaft can be installed in any orientation.Hybrid CKua EiGj

Miyazaki JDL Golf Shaft Review

Miyazaki JDL

By Russ Ryden, A Golf Digest America’s 100 Best Clubfitter
Fit2Score, Dallas Fort Worth, Texas


The JDL from Miyazaki is the 2013 update of the Dromos.  Not much is different, perhaps the torque is a little tighter.  What is new is the addition of four 50 gram versions of the shaft.  Miyazaki claims the JDL is engineered to have ‘superior multi-axis consistency’.  Or, in simpler terms, the shaft is spineless.  This is done by paying attention to the layout of the ends of the sheets of carbon fiber that make up the shaft and using quality material.  I tested the radial consistency of 17 shafts.  They are as good as it gets, varying no more than 1 cpm from hard plane to soft plane. This hand full of shafts is the best radial consistency I have ever seen. Our radial quality measurements were 99% to 100% hard to soft plane ratios. Excellent!

It seemed only appropriate that the image I used of this shaft illustrated the design intent of this shaft.  It is suitable to be installed in any orientation and the graphics wrap around the shaft.  Which brings up and interesting point. In the automobile business we talk about fit and finish.  At $299 MAP, the Miyazaki JDL is a  premium shaft with a premium fit and finish. The graphics are gorgeous, they are protected by a clear coat, and the shaft to shaft consistency is as good as it gets.  There is a shiny sticker on the shaft assuring you that you have the real thing, not a counterfeit.  I know from watching the finishing operations at UST how much work can go into creating a shaft finish.  It is not something to be ignored.  I hear many discussions about shafts and shaft quality.  But few talk about aesthetics. When we look at our luxury automobiles, the finish on the vehicle is an element of our pride of ownership.  And so it should be with our golf equipment. In that regard, the Miyazaki JDL is a great example of how a luxury shaft should look.

And now some numbers:
Tip torque, 50g=4.2, 60g=3.3, 70g=2.6, 80g=2.2
Butt torque, 50g=6.0, 60g=4.6, 70g=3.6, 80g=2.8

Butt Stiffness (pounds to deflect 4″)
50A=5.8, 50R=6.6, 50S=7.0, 60R=6.6, 60S=7.5, 60X=8.5, 70S=7.5. 70X=8.4, 80S=7.7, 80X=8.5

This is a bit different than what I am used to seeing.  Generally the stiffness of the shafts increase with weight, meaning, the 70S will be stiffer than the 60s.  But Miyazaki has chosen to make the stiffness of the shafts uniform across all weights.  Interesting!

Balance points were 25.5 to 26 inches from the tip putting this in the category one might refer to as counter weighted. Raw shaft weight was generally indicated by the shaft number, 5=54, 6=62g, 7=72g & 8=85g.  With typical butt trimming, the finished shaft is going to weigh very close to the number.

The profile, like the Dromos before it is a close match to the Mitsubishi Blue Board, Matrix Ozik, UST ATTAS-T2 and Graphite Design Tour AD-DI.  All represent shafts that are stiffer in the butt, softer in the mid and stiffer in the tip. This classic profile has matured over the last few years to being a smooth loss of stiffness from butt to tip, with a upturn in stiffness near the tip.  In the JDL, that uptick occurs at 14″. The stiff tip gives control to the head in the impact zone and handles today’s larger driver heads .  The JDL torque runs about a half degree higher than the Miyazaki Kusala Blue which has an identical EI pattern, offering a torque fitting option for this profile style.

Miyazaki Kusala Golf Shaft Review


By Tony Curro
Tru-Fit Custom Clubfitters, Latham, NY

SRI Sports launched the Miyazaki brand in 2009. They are produced in the Dunlop Golf Club Corporation factory in Miyazaki, Japan. That factory began producing premium graphite shafts in 1991. Prior to the launch of Miyazaki, the shafts were produced for Dunlop, XXIO and Srixon. Miyazaki has assembled an EI/GJ database of over 5000 shafts. It is evident from the consistency and design of the profiles we have measured that they have used this survey of shafts in the design of the Miyazaki golf shafts. Every Miyazaki shaft is imprinted with a 4 number code indicating the stiffness of 4 zones of the shaft.

The Miyazaki golf shaft company is located in Kobe City, Japan.  With the addition of the Kusala White, and Indigo series shafts, which were introduced in 2012, the Kusala Series is without a doubt the most complete line of shafts on the market today.  With each series containing flex ranges of R, S, and X, and weight ranges of 59/61, 72, and 83, there is a shaft which will benefit every golfer.   The series has 5 different performance DNA’s which are designed for golfers looking for specific results.  The Miyazaki golf company has designed a flex coding system which rates a shaft’s stiffness on a scale of 0-9 (with 0 being the most flexible, and 9 being the stiffest)   They have sub-divided the shaft into 4 regions: Tip, Mid-tip, Mid-butt, and Butt.  Therefore, on each shaft, you will see a series of 4 numbers which define the distinct DNA of the shaft.  In all, there are a 15 different flex codes, designed by Miyazaki. Having this series of shafts in any custom fitting studio is a fitters dream.  The radial quality of the Miyazaki Kusala series is excellent, the shafts can be installed in any orientation and is well suited for use in rotating hosel driver and fairway heads.


Miyazaki Kusala White

The White Series has weights of 56, 61, 72 and 83.  The torque ranges from 4.8 in the 56R to 2.8 in the 83X shafts.This series features a soft yet stable feel in the hands, with a very active tip section.  The EI profile compared to the other models shows us that indeed, this shaft provides the golfer with the most active tip.  The Flex code for the X flexes in all weights is (6852)   This flex signature based on a scale of 9, tells us that the butt section in this model has some flex in the hands, then stiffens significantly around the 30 inch mark, into the mid tip region, and then becomes more active around the 13 inch mark to the tip.  The flexural signature definitely supports the international flex code that Miyazaki gives it in comparison to its other models.  I have found these shafts fit well with golfers who tend to hit the ball with a low to mid trajectory, and the heavier weights are ideal in Fairway woods.


Miyazaki Kusala Blue

The Blue series fits a wide range of golfers by softening the mid butt to the mid tip region, giving golfers with a smoother transition more feel at impact. It is available in 50-80 gram versions. The torque ranges from 4.8 in the 56R to 2.9 in the 83X shafts. The flexural Index supports this when comparing it to the other models.  In looking at the graph around the 14 inch mark, the shaft softens and stays consistent until it reaches the 30 inch mark which is around mid butt section.  The rate of stiffness increases consistently to the butt section.  This is seen by an almost perfect straight line from the 16 inch mark, to the end of the shaft.  The flex code on the 61X is (7756), and the graph supports this.  These shafts work well with golfers who have a smooth transition, and are looking for a mid trajectory ball flight.


Miyazaki Kusala Silver

The silver has a very stiff butt section with an active tip area that produces a mid-high trajectory. It is available in 50-80 gram versions. The torque ranges from 4.8 in the 56R to 2.9 in the 83X shafts.The flex code compared to the white, which also has an active tip area, is a bit stiffer.  In comparing this shaft to the others, it gives the golfer the stiffest butt section of the 5 series, and the flex code of (8755) supports this.  This shaft flexes stiffer to about the 20 inch mark, then from mid tip to the tip section, plays softer.  This Flexural signature promotes higher launch conditions without ballooning.  I have found (the 61X) very effective for golfers who swing it in the high 90’s that have an average transition, looking for a bit more trajectory, without increasing spin.


Miyazaki Kusala Indigo

The Indigo has the most consistent flex code. It is available in 50-80 gram versions. The torque ranges from 4.6 in the 61R to 2.8 in the 83X shafts. Looking at the EI Graph, it produces a near straight line.  The X flex code (7777) shows us a uniform stiffness, and is ideal for golfers who have very aggressive transitions.  With very little deviation from Butt to tip, the heavier weights fit quite nicely the occasional golfer who is very strong, and swings it fast with a forceful transition.   I have put two former Division I baseball players in the 83X, and a gentleman who trims the hooves of cows for a living.  Extremely strong individuals who need the extra weight, and like the stiffer feel at the top.


Miyazaki Kusala Black

The Black series works well with strong players looking for a bit more feel in the handle, who tend to struggle with higher spin rates.  It is available in 60-80 gram versions.  The torque ranges from 4.0 in the 61R to 3.0 in the 83X shafts.  The flex code of (5689) in the X flex, gives the golfer the most stable tip section of all the models.  From the 24 inch mark to the tip, this shaft maintains its stiffness, which is evident in the graph.  I have found that this shaft truly promotes lower spin numbers given to me by the Flightscope launch monitor.  Golfers with very smooth tempo and a smooth transition looking for a lower more boring trajectory really benefit from this shaft.

Kusala EiGj


Miyazaki has really hit a home run with this line of shafts.  It gives me a shaft for every type of golfer who comes into my shop.  With 3 flexes (R,S, X) and 3 weights (59/61, 72. 83) for each series, it is a club-fitters dream.  Each shaft model has proven to benefit different categories of golfer’s.  Having the flex code numbers available during a fitting takes the guess-work out of which shaft model I choose.  The handsome graphics make these shafts distinctive in their own right.  Each model has its own graphics, and each is an original design.   These models only offer a .335 tip, but the tips are extremely stable, and deliver unmatched performance.