I really loved hitting my old Callaway 454 Titanium driver with the RCH 65W firm flex shaft. I wanted to know what were the shaft specs as I cannot find it anywhere? I also wanted to know what shaft would be comparable to it to go into my Callaway Alpha 815 driver (OptiFit shaft)?
@Gman747 unfortunately the RCH shaft line from a QA perspective was awful.
So it would be hard to say what it "reeeaallllyy" was in profile.
And when comparing the difference in the bore thru and the tip adapter install the profiles would need to be very different for the same performance. Taking a WAG and using the new stock offering I would suggest the synergy shaft. For an aftermarket option, UST VTS 6 silver, or VA composites Slay model