The x0 10 speed drivetrain anchored by truvativ39s carbon crankset takes advantage of xx technologies like x glide shifting x dome cassettes and wide range 2x10 gearing while avid x0 brakes dish out all the pwer and control you can handle features include wide range 2x10 and 3x10 systems with x glide front shifting technology and high clamp low clamp high direct mount low direct mount options