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Mitsubishi Rayon’s new Diamana BF-Series shafts



In 2005, Mitsubishi Rayon Composites introduced a mid-launching shaft that became one of the most popular shafts in history. Officially it was known as the Diamana S-Series, but golfers around the world came to know it as the “Blue Board.”

Diamana classics kept coming from MRC — the company later popularized a D-Series, or “White Board” shaft that offered a lower trajectory, as well as an M-Series, or “Red Board” shaft that offered a higher trajectory. Eleven years and many generations later, however, the Blue Board, with its mid trajectory and smooth bend profile, continues to be the company’s most popular model.


This fall, Mitsubishi Rayon has launched the fourth generation of its most premium Diamana Blue Board profile, which it’s calling the BF-Series. The new shaft is designed to replace the company’s third-generation (B-Series) Diamana Blue Board shafts.

Like the B-Series shafts, the new BF-Series shafts use Dialead Pitch Fiber in the butt section of the shaft, which is stronger than carbon fiber. It’s said to provide stability during the loading and unloading process in the transition of the swing, improving energy transfer.

For stability and strength in its tip section, MRC has introduced a new hybrid prepreg that’s never been used before. The hybrid includes boron and a new material called MR-70, which was first introduced in Mitsubishi Chemical’s aerospace sector. Boron adds strength to the prepreg, and the MR-70 material is 20 percent stronger and 10 percent higher modulus than standard carbon fibers, according to MRC.


For a laymen’s visual of what a prepreg is, think of a Fruit Roll-Up (click here for a reminder). Except instead of candy, the flat material is made of carbon fiber, boron, MR-70 and resin. That material is then rolled in specific directions around a mandrel, and baked in a really hot oven to fuse it all together.

The combination of strategically placed materials is designed to make the shaft profile smoother throughout the swing. The result? A slightly lower launch than the B-Series, with more stability, and — if it’s a fit for your swing — a tighter dispersion and more distance.


Mitsubishi Rayon’s new BF-Series shafts are available for $400 each in the specifications listed below:

  • 50 (R, S and X-flex)
  • 60 (R, S, X and TX-flex)
  • 70 (S, X and TX-flex)
  • 80 (S, X and TX-flex)

Below are the full specs, as displayed on Mitsubishi Rayon’s website.


Related: See what GolfWRX members are saying about the BF-Series shafts in our forums

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He played on the Hawaii Pacific University Men's Golf team and earned a Masters degree in Communications. He also played college golf at Rutgers University, where he graduated with a Bachelor of Arts in Journalism.



  1. mr b

    Sep 15, 2016 at 2:14 pm

    yet to find anything to knock my blueboard 73’s out of my fw woods but will give these a try.

  2. Emo

    Sep 14, 2016 at 7:20 pm

    GAwddammit. Not again. What’s with the current trend of extremely high torque for mid-launch shafts at lower weights? Whatever happened to the days of very low torque at lighter weights?

  3. Mikec

    Sep 14, 2016 at 3:27 pm

    No would think not, simply stiffer.
    Tipping is usually never done at he OEM level, but more at the build stage to tweak launch and feel around tip stiffness.

  4. ultimate hacker

    Sep 14, 2016 at 12:24 pm

    is the TX tipped?

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Whats in the Bag

Willie Mack III WITB 2024 (June)



  • Willie Mack III what’s in the bag accurate as of the U.S. Open. 15 clubs pictured. 

Driver: Callaway Paradym Ai Smoke Triple Diamond (10.5 degrees)
Shaft: Project X HZRDUS Smoke Blue RDX 60 TX

3-wood: Wilson Dynapwr (15 degrees)
Shafts: Mitsubishi Diamana WB 83 TX

Hybrid: Ping G430 (17 degrees @20)
Shaft: KBS Tour Hybrid 95 X

Irons: Wilson Staff Model Utility (24 degrees), Wilson Staff Model CB (5, 6), Wilson Staff Model MB (7-PW)
Shafts: Nippon N.S. Pro Prototype

Wedges: Titleist Vokey Design SM9 (50-08F, 56-12D, 58-08M, 60-04L)

Putter: Odyssey Eleven
Grip: SuperStroke Zenergy Tour 2.0

Grips: Golf Pride MCC

See more in-hand photos of Willie Mack III’s WITB here.

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Toulon Golf unveils latest Small Batch putter – the Pinehurst



Toulon Golf has today officially announced their latest Small Batch putter — Pinehurst.

Toulon’s mission in the creation of its latest Small Batch design was to pay tribute to one of the greatest golf tournaments ever contested — the 1999 United States Open at Pinehurst’s famed No. 2.

The ’99 champion, Payne Stewart, used a variety of putters throughout his career, but he is best known for using a center shafted blade, and it was the model used to win at Pinehurst.

Paying tribute to this style of putter, but also pulling inspiration from several of the putters he used over the years, Toulon created Small Batch Pinehurst.

This putter had to be purpose built to be a center shafted putter, meaning Toulon could not simply take a design that would work well with a plumber’s neck.


The key to this design was the topline — specifically its shape, its width and the shape and blend of the hosel as it meets the topline. Toulon landed the hosel slightly rearward on the top line to give the golfer an unobstructed view of the full leading edge and to make it simple to align. The goal of this part of the design was to keep it simple, clean and uninterrupted.

Toulon also took that philosophy when creating the back shoulders and cavity. The back design was inspired by another putter the ’99 champion had occasionally used — though the company changed it quite dramatically. Massive amounts of weight from the center were moved to the toe and heel in design to make it more forgiving, but Toulon also slightly increased both the blade length and the blade width for added forgiveness.

In addition, time was spent shaping the shoulders into a slightly concave shape from the top into the back of the sole. Manufacturers then added Toulon’s slow-machined milled micro grooves to complete the package.

As part of the finish, the Toulon back cavity logo is in a simple and clean new art deco inspired font, paint filled in White against the Midnight Blue finish.

Inspired by Stewart’s love of tartan, Toulon then took the opportunity to create its own tartan and mill it slowly into the sole of the putter. To fully honor his love of color the company painted a small area of the tartan in a Creamy Yellow, Vintage Blue and Vintage Orange.

Toulon Golf Small Batch Pinehurst specs

  • Material: 904L Stainless Steel
  • Face Mill: Fine Double Fly Cut with Small Tuna Overmill
  • Finish: Midnight Blue PVD
  • Grip: Custom Toulon Collection Dark Blue Pistol
  • Shaft: Chrome Stepless Steel
  • Headcover: Small Batch Leather
  • Head Weight: 355 g
  • Toe Hang: C/S
  • Loft: 3 degrees
  • Lie: 70 degrees

Pricing and availability

The Small Batch Pinehurst is available for purchase today via the company’s website —

Supply is extremely limited. The price is $1,800.


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Coolest thing for sale in the GolfWRX Classifieds (6/13/24): TaylorMade BRNR Copper Mini-Driver



At GolfWRX, we are a community of like-minded individuals that all experience and express our enjoyment of the game in many ways.

It’s that sense of community that drives day-to-day interactions in the forums on topics that range from best driver to what marker you use to mark your ball. It even allows us to share another thing we all love – buying and selling equipment.

Currently, in our GolfWRX buy/sell/trade (BST) forum, there is a listing for a TaylorMade BRNR Copper Mini-Driver.

From the seller: (@cg2g): “BRNR MINI Copper 13.5* Maybe hit 4 balls in one round and just for me comes with original HZRDUS Blue RDX X-Flex 70 Gram Shaft and Headcover. $390 Shipped CONUS.”

To check out the full listing in our BST forum, head through the link: TaylorMade BRNR Copper Mini-Driver

This is the most impressive current listing from the GolfWRX BST, and if you are curious about the rules to participate in the BST Forum you can check them out here: GolfWRX BST Rules


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