By Jonathan Wall, PGATOUR.COM Equipment Insider
Creating an iron that's more consistent than its predecessor is something
every equipment company strives to achieve during the design process. Callaway
is the perfect example of a company that was able to do just that with its new
X2 Hot, creating an iron that's 40 percent more consistent than last season's X
That's not a typo. According to Callaway's senior vice president of R&D, Dr. Alan
Hocknell, a few significant technological improvements to X2 Hot allowed
engineers to design an iron that's arguably the company's most consistent iron
The increase in consistency is due in large part to a Chevron-shaped
stabilizing arch in the cavity that was cast into the face of the 17-4 stainless
steel iron. The multi-material badge helps stabilize the upper portion of the
face, improving sound, feel, ball speed and consistency.
"[The stabilizing arch] is the result of countless computer models," said
Dr. Hocknell. "You're actually looking at a part of the back of the face, and
the arch divides the back of the iron into different zones. It stiffens the face
in just the right areas so you get stability in the face, as well as high ball
Along with the improved consistency in X2 Hot, engineers also made the iron
more forgiving thanks to a deep central undercut in the cavity that allows the
face to remain thin all the way to the ground, moving the center of gravity
lower and forward in the face to improve forgiveness. The CG shift also makes X2
Hot about 3 yards longer than X Hot.
Along with the face, the sole and overall front to back profile of X2 Hot
was thinned out to make it look less like a game-improvement iron at address.
The irons also have Callaway’s 30-degree wide-spaced V grooves — the same
grooves currently in the new Apex iron — that maximize spin from the
The X2 Hot Pro irons have the same multi-material stabilizing arch as the
standard X2 Hot, as well as a thinner face — for increase ball speeds — and a
bar along the lower portion of the club that lowers the CG for increased
Compared to standard X2 Hot, the X2 Hot Pro has less offset and a more
compact head. The Pro version, which is also cast from 17-4 stainless steel,
also features Callaway's CG Height Progression, which shifts the the center of
gravity progressively lower in the long irons, for additional forgiveness with
higher a launch and more carry. The short irons have a CG that's progressively
higher, giving them a flatter trajectory with less spin for more control on
X2 Hot Pro has Callaway's new 37WV groove design — the same groove design
as Apex Pro — that delivers a higher launch out of the rough for more distance.
Callaway's X2 Hot standard iron will be available Jan. 17 and comes with
True Temper's Speed Step 85 steel shafts for $799. The X2 Hot Pro comes with
Project X 95 Flighted shafts for $899.