The Titleist 907D2 new for 2007. The 907 range is available in 2 options D1 and D2. The D1 features a multi-material design. Its construction, a 6-4 titanium body and SP700 beta titanium face insert. The biggest differences between the models are the head shapes. The D1 has a slightly triangular looking head design.
This gives the club high (MOI) resulting in less club head twisting with off centre strikes and better energy transfer from club to ball. The Titleist 907 D2 has a more traditional pear shaped head and aimed at the better golfer. Featuring the same multi material design the 907 D2 460cc head has advanced traditional geometry with enhanced MOI for increased distance and workability.