The 913 uses the same SureFit Tour (SFT) adjustable hosel as the 910 but, Titleist say, offers more speed, more distance and better performance.
The extra ball speed is achieved via a new insert and therefore a faster face. The challenge was to make as much of the face at the legal limit – so that has actually been thickened up to slow it down; if you make the rest of it at the maximum limit then the centre is too fast.
Now the 913 has a thicker centre piece and then thins it back down away from the centre.
More distance and performance is achieved through better launch conditions and this is all down to something called the neutral axis and this is the key variable when designing a driver.
Compared to the D3 (see opposite page) the D2 is more stable, has a little draw bias and retains its 460cc full pear shape.
D2 lofts: 7.5, 8.5, 9.5, 10.5 & 12°