It looks like these shafts will no longer be available.

What shafts are being recommended as comparable replacements?

I built a driver using the xcaliber pro and the shaft broke.


Yeah, it’s a shame. Hopefully it’s just a “time out” kinda thing.
I’ve used a lot of Grafalloy and UST Mamiya shafts over the years, especially the Pro Launch Blue, and have seen greats results, and feedback. Not too expensive either. If I’m not mistaken, the Pro Launch Blue was designed by Robin Arthur, when he was there, many moons ago. Yeah, there’s lots of options out there.