Abstract: A seat post comprises a head with tapered openings therein, and correspondingly tapered wedge members adapted to fit therein. Clamp members cooperate with the wedge members to define seat rail receiving clamps, whereby a through bolt and nut are tightened to secure the seat rail to the head.

Abstract: A bicycle stem includes a wedge member and corresponding indentation defined in a lower portion of a hollow stem tube, carried on a stem body. The stem body includes a blot that engages the wedge via a through bore from the upper portion of the stem body into the indentation, whereby the wedge may be pulled tighter into the indentation. The wedge has a fork tube engaging surface profile on a face opposite the face engaging the indentation.