Titleist Pro Titanium 905R. As used by Zach Johnson to win the 2007 Masters at Augusa National - the Pro Titanium 905R is a 460cc driver, the maximum allowable head size for players seeking the ultimate combination of ball speed launch angle, spin and forgiveness. With Titleist's distinctive pear-shaped profile, and shallow face set naturally square to address it instils confidence from the first swing. The new driver joins the 400cc 905S in Titleist's Pro Titanium driver family. The 460cc head offers greater forgiveness and a sweet spot 35% larger than its smaller companion. A slightly altered weight distribution provides the 905R with a deep centre of gravity and a little more spin than the 905T. Compared to the 905S, the Titleist Pro Titanium 905R offers higher spin and a slightly higher launch angle. Whereas the 905S is tailored for higher ball speed, high spin players actively seeking lower launch and spin.