Abstract: A vehicle seat assembly includes a seat bottom and a seat back supported for movement relative to the seat bottom such that seat position can be adjusted forwardly or rearwardly with respect to the vehicle. The seat assembly is mounted to a vehicle structure and includes a first track and a second track supported for movement relative to the first track with the seat bottom being supported on the second track for movement with the second track. A support member presents a bearing surface that rotatably engages a bearing surface on the second track. At least one adjustment link is used to interconnect the support member and the seat bottom. The adjustment link is mounted on the support member for rotation therewith to provide vertical seat adjustment. A torque tube engages the support member to provide rotational input to the adjustment link.