Mitsubishi Diamana RB Shaft

(Red Board)

(Red Board)

We all knew it was just a matter of time, but finally after 2024 saw the return of the Diamana White  Board (WB) and Blue Board (BB) to celebrate twenty years for the lineup for Mitsubishi Chemical, the company is kicking off 2025 in style with reemergence of the Red Board (RB). Built around the same foundational principles of pure feel and premium performance, the RB is the missing piece to the puzzle, completing the Diamana matrix, and THP has all of the info you need. 

2025 Mitsubishi Diamana RB

Mitsubishi Diamana RB shaft

When it comes to the Red Board, this iteration might be a bit later to the party than its siblings through this staggered launch but rest easy in the understanding that it is missing none of the technology. In all honesty, the RB dropping now makes sense, as when most golfers think Diamana, it is the WB and BB which pops into their minds. The RB though holds a critical place in the fitting matrix for Diamana, and with the new materials and technical applications into the designs, it might just fit a broader group than you expect. 

Mitsubishi Diamana RB – Design

The Red Board was designed to create an easier launch of the ball off the tee while not sacrificing downrange dispersion, all the while also capturing that legendary smoothness that Diamana is known for. What may shock some is the fact that it actually hasn’t been available since the second generation of the line. 

Officially, the RB is being classified as a Mid/Mid-High launching and Mid spin shaft which is utilizing Mitsubishi’s “Consistent Feel Design” to help simplify the fitting of the entire Diamana lineup, with part of that being the return to the classic weight designations. Internally, they have applied the Xlink Tech Resin System to allow more carbon fiber and less resin. Like its siblings, the RB also uses 80-ton DIALEAD pitch fiber in the handle and aerospace MR70 though the full-length of the shaft. Finally, there is a new orientation of material in the tip section which brings down the torque while not sacrificing launch. 

Mitsubishi Diamana RB design

Based on the internal testing by Mitsubishi Chemical the new Red Board averages over 2-degrees of added launch and around 200 more RPM of spin than the Blue Board design. The key though is that thanks to being able to bring the torque down compared to other “high-launch” shafts in the segment, they have added better downrange dispersion. The results of the design have been impressive enough that the RB is already in play on Tours worldwide. 

Mitsubishi Diamana RB Specs

Mitsubishi Diamana RB tech specs

The Details

While today marks the official unveiling of the new Diamana RB from Mitsubishi Chemical, the shaft won’t hit retail until 2/7/25. The MSRP on the Red Board will be $400.00 and will be available at fitters and distributors worldwide. 

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James is a staff writer for The Hackers Paradise along with being a professional educator. With his background in education James seeks to broaden his own knowledge while also sharing it with all those who share his passion for the game.