An improved semi-recumbent bicycle seat includes a frame having a main seat support tube and a steering mechanism including a front tire support fork. Front and rear wheels are mounted on the front tire support fork and on the frame. A bicycle seat is mounted above and forwards of the rear wheel, the bicycle seat including a bicycle seat frame, a seat base and a seat cushion. A seat back is adjustably mounted on the bicycle seat frame for adjustment of the height and spacing of the seat back relative to the seat base, and the seat cushion includes a generally flat planar front face and a forwardly tilted top surface which is tilted from horizontal between two and thirty degrees (2° and 30°). The bicycle seat frame is adjustably mounted on the main seat support tube free of any other support connection to the bicycle frame.