Ritchey: The WCS Carbon LINK FlexLogic post brings more compliance, increased versatility, and a lighter weight to the legendary Ritchey Two-Bolt seatpost system design.This post has a 15mm offset, and the patented LINK clamp is reversable and fits all standard saddle rail designs.The carbon layup used for the Carbon LINK FlexLogic was originally developed for top-level Pro Tour teams and is 15% more vertically compliant than other layups, with no loss of lateral or torsional stiffness – perfect for racing in the Alps during the Tour de France or riding along your local gravel roads. Material: carbon fiberDiameter: 27.2, 30.9, 31.6mmTotal length: 300, 350, 400mm (including 100mm of minimum insert)Offset: 15mmSaddle clamp: standard railsSaddle clamp torque: 15Nm (max)Seat collar torque: 6Nm (max) / 7Nm (max) for Ritchey steel framesWeight: 195g (27.2x350mm)Colour: matte UD carbon finishSize: 350x27.2, 400x27.2, 400x30.9, 400x31.6