Abstract: A bicycle seat height adjusting assembly comprises of a seat post that axially slides into an insert tube that fits into a bicycle frame in the place of a conventional seat post. The front of the insert tube has a plurality of evenly spaced locking holes sized to receive a locking pin. The locking pin with supplemental spring is positioned within the lower section of the seat post. A main air spring is positioned within the seat post to keep the main air spring free from dirt interference, allow the post to fully rise and lower, and enable the use of a maximum height pre-adjustment system. A first longitudinal groove positioned along the inner wall of the insert tube contains a spline rod with wedging projections. The spline rod is connected to a cable that extends out to an actuation lever that is positioned on the handlebars. As the actuation lever is pulled, the wedging projections push the locking pin out of the locking holes where the main air spring causes the seat post to rise.

Abstract: A bicycle seat height adjusting assembly comprises of a seat post that axially slides into an insert tube that fits into a bicycle frame in the place of a conventional seat post. The front of the insert tube has a plurality of evenly spaced locking holes sized to receive a locking pin. The locking pin with supplemental spring is positioned within the lower section of the seat post. A main air spring is positioned within the seat post to keep the main air spring free from dirt interference, allow the post to fully rise and lower, and enable the use of a maximum height pre-adjustment system. A first longitudinal groove positioned along the inner wall of the insert tube contains a spline rod with wedging projections. The spline rod is connected to a cable that extends out to an actuation lever that is positioned on the handlebars. As the actuation lever is pulled, the wedging projections push the locking pin out of the locking holes where the main air spring causes the seat post to rise.

Abstract: A bicycle seat height adjusting assembly comprises of a seat post that axially slides into an insert sleeve that fits into a bicycle frame in the place of a conventional seat post. The front of the seat post has a plurality of evenly spaced holes sized to receive a locking pin. The locking pin with supplemental spring is positioned within a generally cylindrical protrusion that extends out from the top section of the insert sleeve. A main air spring is positioned within the seat post to keep the main air spring free from dirt interference, allow the post to fully rise and lower, and enable the use of a maximum height pre-adjustment system. The locking pin connects to a cable that extends out to an actuation lever that is positioned on the handlebars. The opening between the main air springs two chambers is sized to damped the airflow and keep the seat post from rising up too fast.

Abstract: A bicycle seat height adjusting assembly comprises of a seat post that axially slides into an insert sleeve that fits into a bicycle frame in the place of a conventional seat post. The front of the seat post has a plurality of evenly spaced holes sized to receive a locking pin. The locking pin with supplemental spring is positioned within a generally cylindrical protrusion that extends out from the top section of the insert sleeve. A main air spring is positioned within the seat post to keep the main air spring free from dirt interference, allow the post to fully rise and lower, and enable the use of a maximum height pre-adjustment system. The locking pin connects to a cable that extends out to an actuation lever that is positioned on the handlebars. The opening between the main air springs two chambers is sized to damped the airflow and keep the seat post from rising up too fast.

Abstract: A seat post axially slides into an insert sleeve that fits into a bicycle frame in the place of a conventional seat post. The seat post has a long keyway along the front and a narrower keyway or tubular section along the posts back. Along the inner wall of the front keyway is a plurality of holes sized to receive a locking pin. Connected to the inner wall of the insert sleeve is a support key unit that slides within the front keyway of the seat post, as the seat post is moved up and down. In the support key, the height adjusting, locking pin is housed as well as a hanger is formed where one end of the elastic spring is attached. The elastic spring is then brought around a pulley positioned within the bottom portion of the seat post, brought up the rear keyway and is attached at the top of the seat post in a downward pointing hanger. The elastic spring acts as if it were attached from the bottom of the seat post to the bottom of the support key.