Ritchey comp 2 bolt seatpostthe comp level components are designed to bring competition worthy components down to a price that everyone can handle you wont find carbon here but you will find the kind of performance and reliability you expect from ritchey featurestwo bolt design for easy to adjust vise like griplow profile clamp reduces stress on lightweight rails and wont bottom outbolts oriented to the axis of the rails for greatest contact area with the saddle3d forged 606126 8 27 0 27