/teamtitleist/b/tourblog/posts/first-look-under-the-hood-of-the-new-titleist-ap-irons www.youtube.com/watch In late June, we introduced four new Titleist iron models to the worldwide professional tours as part of our performance validation process. The response on Tour to the new AP1, AP2, CB and MB (712 series) irons has been overwhelminglyen-USTelligent Community 10