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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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VRST Golf unveils new clothing line for 2023



This week, a new golf clothing line was announced by VRST Golf.

The brand launched in 2021 and is a men’s apparel line that brings style and versatility to both the athlete and everyday man, where pieces can be worn for training to casually getting around town.

With the Golf season right around the corner, their first-ever golf collection brings modern style that can be worn on-course and off. You can find all of the available items here: VRST

VRST Golf offers versatile and trendy golf tops, bottoms, and layering pieces. The line provides styling options for the versatile golfer with gear that goes beyond the course. The collection is now available online and at select DICK’S Sporting Goods and Golf Galaxy locations and will be expanding to over 180 store locations by end of February.

Check out VRST’s launch video here:


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Odyssey Tri-Hot 5K lineup now includes mallets



What you need to know: In January 2022, in the name of creating a blades with the MOI of mallets and forward CG, Odyssey threw everything at the wall with the Tri-Hot 5K family of blade putters: stainless steel, tungsten, 6061 aircraft grade aluminum. A year later, the company is bringing the same technology package to mallets with the Rossie and Seven models. The Tri-Hot 5K lineup now stands at seven putters (four with multiple necks).

2023 Odyssey Tri-Hot putters: Features and technology

Engineers applied the “Tri-Hot formula” utilized in blade putters in 2022 to move CG forward and raise MOI for a more forgiving mallet design — and a 5,000 IZZ inertia level (hence “5K”). Golfers will see improved speed and spin control, as well as consistency on off-center hits, according to the company, resulting in golf balls that finish closer to the hole when sub-optimally struck.

Stainless steel front: Odyssey touts the side-spin reducing capabilities of the 303 stainless steel hosel and face area for off-center putts. Tighter dispersion and putts that a more likely to go in results. Acting in a complementary fashion, the rear of the mallets are milled for tighter shape and weight tolerances that allows the CG to remain forward.

Tungsten front weights: Up to 120 grams of tungsten is positioned behind the face in the heel and toe sections of the putter heads. The resulting forward CG improves roll and increases inertia.

Interchangeable front weights: Available in 5, 10, 15 and 20 grams to dial in head weight and performance.

White Hot insert: 2023 Tri-Hot 5K putters add the iconic two-part urethane White Hot insert, which was originally developed using the same material as Callaway’s Rule 35 golf ball. White Hot, with its “firm but soft” properties has been a long-time favorite of Callaway staffers and recreational golfers. According to Callaway, “They’ve been asking for us to bring these technologies back and we’ve listened.” Can’t argue with that.

Stroke Lab shaft: The newest generation of Callaway’s multi-material Stroke Lab shaft features a shortened steel section and reduced weight (seven grams). Additionally it is stiffer. All of this leads to more stability and consistency.

Additional model details

Full lineup details — and who they’re for — including 2022 releases, via Callaway. 

One: A classically shaped heel toe weighted putter with a crank neck hosel creating moderate toe hang making it suitable for strokes that have moderate arc and face rotation

Two: A classically shaped heel toe weighted putter with a crank neck hosel creating moderate toe hang making it suitable for strokes that have moderate arc and face rotation. Less rounded than the One.

Three: A classically shaped heel toe weighted putter with a flow neck hosel yielding more toe hang making it suitable for strokes with more aggressive swing arc and face rotation

Double Wide (CH, CB): CH: A wide blade with a crank neck hosel yielding moderate toe hang making it suitable for strokes with moderate swing arc and face rotation. CS: Face-balanced center shafted wide blade making it suitable for strokes with minimal swing arc and face rotation

Triple Wide (DB, CS): DB: A face-balanced double bend wide blade making it suitable for strokes with minimal swing arc and face rotation. CS: A face-balanced center shafted wide blade making it suitable for strokes with minimal swing arc and face rotation.

Rossie: (DB, S): DB: A face-balanced double bend mallet suitable for strokes with minimal arc and face rotation. S: A mallet with a short slant hosel, suitable for strokes with arc and face rotation.

Seven (DB, S, CH): DB: A face-balanced double bend mallet suitable for strokes with minimal arc and face rotation. S:  mallet with a short slant hosel, suitable for strokes with arc and face rotation. CH: a mallet with a crank hosel, suitable for strokes with moderate arc and face rotation.

Pricing and availability

At retail: March 2, 2022

Price: $399.99

Standard grip: Odyssey Tri-Hot 5K Pistol

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Best players irons of 2023 – GolfWRXers discuss



In our forums, our members have been discussing the best ‘Players’ irons of 2023. WRXer ‘odshot68’ kicks off the thread saying, “Looking to get a new set of players irons this spring and wondering what you guys like. Distance control is very important; I’m not a fan of irons with hotspots,” and our members have been selecting their favorites from recent releases in our forum.

Here are a few posts from the thread, but make sure to check out the entire discussion and have your say at the link below.

  • noodle3872: “Titleist T100/T100S should be in the conversation.”
  • sadclevelandsports: “I love my T100s, but recently tried the new Cobra CBs, and they are just as high quality.”
  • edwelly: “I have been fortunate enough to have several nice sets of irons. A couple of Maura sets and, most recently, the Bridgestone J40s. Today I took out my new Srixon ZX5/ZX7s, and they are phenomenal irons. I cannot recommend those enough. “
  • KevCannon: “T100 should be on the shortlist to try.”

Entire Thread: “Best Players irons of 2023 – GolfWRXers discuss”

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