The effect of this, amongst other things is to reduce backspin by around 277rpm, increase the size of the sweet spot by 16% and the Moment of Inertia (MOI) by 9%. Effectively this allows the face to flex more at impact and enables weight that is removed from between the ribs to be useful elsewhere the head. The speed freak claims are all down to two tried and trusted technologies and one new feature that combine with the tighter manufacturing tolerances to maximise the ball speed through the face.įirstly you have the R MOTO face design that was first introduced on the Callaway Big Bertha Alpha 815 driver. The only concession to adjustability is the usual Callaway Optifit adjustable hosel that enables you to change the loft across a range of 3° and two different face angles.Īs I have mentioned before in Callaway reviews you need to get the right initial loft as if you want 10° then you need to come up 1° from the 9° head as you can't get there by coming down from the 10.5° head. Apparently it is just built for 'outrageous speed' and the 'race inspired' graphics certainly look like someone in the design team is a BMW M sport fan.ĭespite, or maybe because of this slimmed down approach, the X2 Hot was a driver for all golfers from Tour Pro's to mid handicappers and the XR driver successfully follows in its footsteps. Unlike the last few drivers Callaway has released, the XR has no gravity core, no moveable weights or any other Centre of Gravity (CG) moving technology. The Callaway XR driver replaces the very successful X2 Hot driver and it has a lot to live up to as the previous model was one of the best selling drivers in the market.

Callaway x hot driver adjustment tool