TSi also optimizes sole to crown performance, producing up to 13 percent higher inertia values (versus prior generation TS models) that deliver more speed and a tighter launch and spin range up and down the face. While golfers often equate “high MOI” with heel to toe forgiveness, Titleist R&D employs a more holistic approach to MOI design. TSi feels fast in a golfer’s hands and is complemented by meticulous sound engineering that manages vibrations within the clubhead to deliver a Tour-quality sound. The new head shapes feature a tour-requested softer toe profile that looks square at address. Both TSi2 and TSi3 have been aerodynamically engineered to reduce drag up to 15 percent (versus prior generation TS models), increasing clubhead speed for greater ball speed and distance.
The improved shaping of TSi allows the clubhead to move faster through the air and deliver a more powerful impact. The TSi face also features a new high-contrast graphic design that accentuates face center for easy alignment at address. Titleist is the only company in golf that uses this material. Made by a single foundry in Pittsburgh, ATI 425 was initially developed for ballistic armor and has since been used in many aerospace and industrial applications, including NASA’s Phoenix Mars Lander. This is not an easy material to obtain, but the benefits to the golfer are beyond anything we’ve ever seen.” It let us optimize the thickness of the entire face to a degree that was never possible before and generate our highest ball speeds ever at points all over the face – not just heel and toe but also high and low. “It’s incredibly strong and maintains elongation under high stress. “ATI 425 is an amazing alloy that leads to a lot of performance benefits,” said Dan Stone, Senior Vice President, Titleist Golf Club R&D.
The exceptional ductility of ATI 425 (30 percent higher than 6-4 Titanium) allowed engineers to produce Titleist’s fastest driver face, while maintaining the durability properties required for consistent maximum performance. For players seeking incredible speed and accuracy across the entire surface of the face, the TSi2 driver features a deeper, lower CG to maximize distance through Speed Optimized MOI design.Īccurately tuned for speed at every point of contact, TSi driver faces are constructed from ATI 425 Aerospace Titanium, a unique material that delivers superior strength, elasticity and durability versus the conventional titanium alloys used in golf.