The new Titleist TSi4 driver features all of the benefits of the Titleist TSi driver line, including explosive ball speeds from a ATI (Aerospace Titanium) 425 clubface, in a more compact, pear-shaped clubhead designed for low spin and workability. 0:00…

The new Titleist TSi drivers, the Titleist TSi2 and Titleist TSi3, feature a new shape and a new clubface material that drive enhanced ball speed and performance. In this video, Drew Mahowald and Thomas Campbell from 2nd Swing Golf test…