UST shared with me some of the thinking behind the VTS line of shafts and what kind of process they've been using to create a "matrix" of shaft profiles that conceivably will be able to fit just about any golfer:
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As for the shafts, yes we are currently developing the VTS for tour and have placed some prototypes on tour for testing purposes. We are in the final stages of development for that product and should have quantities soon. The VTS stands for Velocity,Torque and Speed. The VTS was developed after two years of testing with an outside agency who specialize in biomechanics. We were able to isolate every spec of the shaft and determine what truly moves the needle in shaft specs. We found that torque has been overlooked for years and is a major contributor to reducing dispersion and increasing ball speed. The industry has down played torque for years because they didn't understand it, nor spend the time to realize what it brought to the table. The industry put torque in a box and said if you're a high swing speed guy you need low torque, that is absolutely fales!!! We have found that torque is a custom fit item and each player requires different torque regardless of their skill levels. Ironically the long drive shafts are predominately in the 4.5 range, so that blows that whole theory about high speed low torque. I have attached a quick overview of the VTS.
The reason good players have stayed away from high torque is because most high torque shafts have been combined with very weak butt, mid and tip flexes, so the whole shaft was weak. We have designed XX shafts for tour with 4.5 torque and guys love them. The torque make up in the VTS goes from 2.5, 3.5 to 4.5 in a TX, X, SX, S, R. basically a 40 shaft matrix that can fit any player in the world!
As for the Tour SPX that is our tour program that we will now offer to the general public. USTM has always sorted our shafts for the tour, V2, Axiv Core, Attas, Attas t2 etc. The USMT shaft you bought in the shop was never the same caliber shaft as the one used on tour. The tour shafts are measured for 36 different specs and each tour shaft must meet a nominal spec or it doesn't go on tour, much tighter specs. The tour shafts have a small laser etch about 10" up from the tip which has number such as "TOURSPX12345". The specs are loaded into a data base and then we can use them to reference a players specs when he needs a backup or to also reference if changes in his setup are required. It helps us keep track of exactly what a player has in his bag. This will now be offered to selected Custom dealers who can also use the TourSPX to fit their players as well.


"It is almost impossible to remember how tragic a place the world is when one is playing golf." -Robert Wilson Lynd
Who am I kidding?! There is no such thing as a set WITB.