Gravity Core Controls Spin
Callaway’s Gravity Core technology was first introduced with the Big Bertha Alpha driver a few years ago and enables the golfer to fine tune the spin profile of the club head with a tungsten end paired with a 1.5-gram nylon end. By positioning the rod in the head with the heavier tungsten end towards the crown (also known as the high-CG setting), the club will play like a mid-spin driver. On the flip side, with the low-CG positioning of the tungsten towards the sole, it will decrease spin and increase forgiveness. The movement of this core weight system can affect the spin rate of the driver’s head by up to +/- 300RPM’s (depending on the player).