Mitsubishi Diamana GT Golf Shaft Review
By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Builder
The Highlands Performance Golf Center, Carrollton Texas
Golf Digest Certified America’s 100 Best Club Fitter
The Mitsubishi Diamana GT is one of the 5th generation Diamana models. Mitsubishi Chemical Group is unique among the golf shaft companies, they are vertically integrated. They make all of the critical raw materials that make up the golf shaft including the monomer, acrylic fiber, carbon fiber, resin, and prepreg. Prepreg is the sheets wrapped around mandrels that are the material of the carbon fiber golf shaft. Other golf shaft manufacturers purchase the prepreg used in their shafts. This allows the Mitsubishi Chemical Group to create unique technologies in their golf shaft designs.
Once again, Mitsubishi has reduced resin content in the 5th generation Diamana with a proprietary resin system named Xlink Tech.
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Russ
The KuroKage XD has a dual wrap of Titanium Nickel prepreg in the tip as you can see in this image. Titanium Mickel (TiNi) is an elastic wire that immediately springs back to its original shape when stretched. It is used to increase the tip stability of the shaft. If a single wrap is good, as illustrated by multiple PGA Tour wins, Then a double wrap should be better. This is one of an array of that tip reinforcements used by Mitsubishi Chemical. The 
When I looked at email this morning there was an announcement from Oban that the AirBurst shaft is now available. I called Ralph for review samples and he told me the protos I had measured last year were the final versions. Much to my delight I was not going to have to spend a half day measuring shafts for the knowledge base and this review. When the TaylorMade M3 arrived in January it went into my bag. Over the last few months I have played a number of 50 gram shafts. The AirBurst was in the bag last month and between storms and cold weather it got played for a few rounds.
The TI-Fiber driver shafts wrap a braided titanium wire over a filament wound carbon fiber core. This process is explained in greater detail on the 
This is the second release of a Diamana Thump Iron Shaft. The first release, in 2010, was eventually discontinued. At $160 per shaft, or $1280 per set of shafts, there was little interest. I am surprised to see the shaft again being offered. Perhaps PXG’s success at selling uber expensive irons demonstrated there is a market for ultra premium irons.