In continuation of the popular Wilsons Four series, a completely new KFour is born. Designed for the player who is beginning to utilize more pace and spin in their shots, the K Factor KFour FX is the pinnacle of balance between power, stability, maneuverability and [K]ontrol. The intermediate weight, larger head size, and extended length all contribute to the KFour FXs outstanding balance, making it perfect for the intermediate player or younger junior who is looking to transition from a weight of racquet that is no longer manageable for them without losing any playability. The use of [K] Factor and FX technology add even more feel, stability, and mobility to the KFour FX than its predecessors, the KFour OS and KFour MP. The [K]onnector, [K]ompact Center, [K]ontour Yoke, and Karophite Black are all technologies from Wilson that are designed to improve your game with more control and feel.