TaylorMade Qi4D Max DriverQi4D Max Driver Built For Speed. Qi4D Max is our first ever modern, adjustable non titanium driver. We combined a forged aluminum collar with a max forgiveness shape to give you speed without compromise. The Science of Swing 11 Million Shots. One Perfect Fit. 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