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Mitsubishi Rayon’s new Diamana BF-Series shafts

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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.

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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.

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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.

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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.

MitsubishiBF-SeriesSpecs

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.

4 Comments

4 Comments

  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

Russell Henley WITB 2024 (March)

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  • Russell Henley WITB accurate as of the Cognizant Classic.

Driver: Titleist TSi3 (10 degrees, B1 SureFit setting)
Shaft: Project X HZRDUS Smoke Black 70 6.5 TX

3-wood: Titleist TS3 (16.5 degrees, D1 SureFit setting)
Shaft: Project X HZRDUS Smoke Black 80 TX

Hybrid: Titleist TSi2 (21 degrees)
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Irons: Titleist T100 (4-9)
Shafts: True Temper Dynamic Gold AMT (4-6), True Temper Dynamic Gold Tour Issue S400 (7-9)

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Shafts: True Temper Dynamic Gold Tour Issue S400

Putter: Scotty Cameron T5 Prototype

Grips: Golf Pride Tour Velvet

Ball: Titleist Pro V1x

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Ball: Renegade Mbu

Check out more photos of Vince Carter’s WITB here.

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From the Forums: I need more forgiveness in my irons – Looking for recommendations

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In our forums, our members have been discussing the most forgiving irons currently on the market. WRXer ‘TheShark1’ is on the hunt for a new set of irons, saying:

“Currently gaming the Mizuno Pro 225’s but think I need more forgiveness in my irons. My well struck shots are real nice, but my mishits are not performing as good as I had hoped anymore. I really like hollow body irons so if I could find something more forgiving in a hollow body iron that would be great.

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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.

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Entire Thread: “From the Forums: I need more forgiveness in my irons – Looking for recommendations”

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