The new Titleist TSi metals represent the best of Titleist’s peerless pursuit of speed - continually investing in new materials and technologies to push the boundaries of fast.
And one of the biggest advancements you'll see the next time you pick up a TSi driver is the small "ATI" logo on the bottom left corner of the face - representing ATI 425 Aerospace Titanium, a unique alloy never before used in golf equipment (until now).
So, what exactly is ATI 425 and why is this unique alloy key to creating a driver face that delivers increased ball speed at every point of contact?
Hear from our Golf Club R&D Team on why ATI 425 helps make the new TSi Drivers the longest and straightest drivers we've ever made.