In addition a Crown Step design lowers the CG allowing for improved launch characteristics. The Z F85 comes standard with a Project X HZRDUS Red 65 shaft and is available in 13.5° 15° and 18°.
This improvement saves weight and lowers and deepens the CG for improved launch and carry distance. As a result of the weight savings in the crown and variable thickness clubface the TS2 actually features the lowest CG of any Titleist driver to date increasing MOI over the previous 917 D2 by as much as 12%.
Since then however the JPX 900 models most notable the Forged Tour have been a huge hit with all kinds of players including two-time US Open champ Brooks Koepka.