Syncros Duncan SL Aero CFT Seatpost Flex Where It Counts Road riders who want aero performance without the harsh ride of a fully rigid post will find exactly that here. The Duncan SL Aero CFT uses a patented two-piece carbon construction where the front section flexes under load and over rough pavement to absorb road buzz without sacrificing the post's aerodynamic profile. It was developed alongside the SCOTT Foil and sits at the top of the Duncan line, built from unidirectional carbon fiber for the highest strength-to-weight ratio the SL designation promises. Features Patented two-piece CFT construction front section flexes under load for road comfort without a rigid post penalty Aero-optimized carbon profile engineered to match the SCOTT Foil's aerodynamic architecture Unidirectional carbon fiber layup higher tensile strength and modulus than woven carbon patterns for an ultralight SL-tier build Proven Syncros clamp design compatible with 7x7mm and 7x9mm rails for straightforward saddle fit | Syncros | Duncan Sl Aero Cft Seatpost 0Mm Offset