FSA K-Force Lite SB0 Carbon Seatpost Di2 E-Tube Compatible 27.2/350mm BlackThe FSA K-Force Light Seatpost uses one-piece continuous carbon fiber construction with FSA's Minimal Top Clamp (MTC) design. For strength and lightweight, M5 chromoly and stainless steel hardware is used in the seat clamp. The K-Force Light SB.0 features zero setback for better bike fit and saddle support.840031036773