* HEED THE CALL The CAADX has a slightly taller head tube & slightly slacker head tube angle than the Super X, providing a more upright position & super stable handling. With taper-butted, shaped tubes joined by our trademark double pass smooth welds, CAADX continues our tradition of aluminum mastery. The hourglass shape of the seat stays offers significant vertical compliance for key comfort & control over the harsh ruts & mud of ‘cross, while remaining laterally.