TaylorMade Qi4D Max Lite DriverQi4D Max Lite Built For Speed. The Qi4D Max Lite is our first ever modern non titanium driver. It features an ultralight spec package perfect for players looking for maximum speed without sacrificing forgiveness. The Science of Swing A Shaft For Every Swing How do we guarantee performance? We started by capturing and analyzing more than 11 million shots over the last 20 years. This massive dataset allowed us to understand the golfer's closure rate