Key Technology
A new crown shaping is said to reduce aerodynamic drag by up to 15 per cent versus the TS drivers to help increase clubhead speed.
The faces are made from a rare ATI 425 titanium, which has a high strengthto-weight ratio and better elasticity and durability properties for more speed.
The TSI2 has a fixed rear 9g weight, while the TSI3 has a moveable 8g weight that can go in five positions to alter shot shape.
“The TSI drivers improve in all areas over TS, but in particular they increase distance while maintaining control of direction” Joel Tadman, GM technical editor