The differences between them are in clubhead size/shape, amount of draw bias, and whether the golfer prefers a little more forgiveness or a little more workability.
The 913D2 has a slight draw bias. Its 460cc head has a fuller pear shape, and it is the more forgiving of the 913 Series drivers.
The 913D3 has a 445cc head with a more traditional pear shape and is designed for golfers who want more workability off their driver. There is no draw bias in the D3 model.
Both drivers incorporate Titleist's SureFit Tour hosel, which gives golfers the ability to independently adjust loft and lie angles. The 16 settings available through the SureFit system can help the golfer raise or lower trajectory, add or subtract draw bias or fade bias. Titleist clubfitters can make the hosel adjustments working with the golfer, but each 913 driver comes with a torque wrench. Clubhead weights can also be adjusted to affect swingweight and feel, and additional SureFit Tour Weights can be purchased separately.
The Titleist 913D2 comes in lofts of 8.5, 9.5, 10.5 and 12 degrees for both RH and LH, plus 7.5 in RH only. The 913D3 is the same, except that the 12-degree loft is not offered. Both come standard with Titleist Tour Velvet 360 grip and shaft length of 45 inches. The stock shaft options include the Mitsubishi Diamana +Plus White 72, Mitsubishi Diamana +Plus Blue 62, Aldila RIP Phenom 70, Aldila RIP Alpha 60 and Mitsubishi Titleist Bassara W 50.
The Titleist 913 drivers reach golf shops on Nov. 1, 2012, with MSRPs of $449. titleist.com
