oobgolf is merging with skygolf 360!

We're excited to announce that oobgolf is officially merging with SkyGolf 360 on July 20th 2017. You can transfer your scores and stats to SkyGolf 360 so you don't miss a beat this golf season! To start the transfer process, please click here.

For a limited time, you can receive a risk-free 14-day trial of SkyCaddie Mobile. For more info, please click here.


Home > Irons

Extreme X4 Black

  - Integra
The Extreme X4 Black irons feature a deep cut cavity to move the center of gravity low and farther behind the face to optimize the heads perimeter weighting that has been maximized to improve the moment of inertia (MOI). With the deep cut cavity the sole and topline of the club head is reduced to enhance the look of this very traditional looking clubhead.
Equipment Ratings