Factor Lando XC Fox Premium Package w/ WheelsFrame TeXtreme, Toray, Nippon Graphite Pitch Based Fiber Seatpost 0 setback 31. 6mm round seatpost Barstem Refined carbon barstem with tuned stiffness semi integrated cabling solution using a 1 1 2 upper bearing with a 1 1 8 steerer tube Headset CeramicSpeed SLT bearings 1 1 2 upper and lower bearings, with a reducer to upper 1 1 8 steerer Head Tube Diameter Headset, 1 1 2 upper and lower bearings, with a reducer to upper 1 1 8 steerer Saddle Rail