The Continental X-King Sport 2.2 (Wire Bead) Mountain Tire is pronounced "cross king", the X-King perfectly fills the gap between Continental's Race King and Mountain King II in terms of application. It was developed in conjunction with the Topeak- Ergon professional MTB team who have now recorded numerous race wins on what they call the "perfect race day tire". The 2.4 option appeals to enduro applications where terrain dictates larger volume, but less weight, yet the 2.2 rolls like the wind while still providing ample control. The sport version is an excellent option for the budget minded rider looking for optimal performance.