An adjustable seat assembly for a motorcycle includes a seat pan having a base shell, an adjustable shell, and an adjustment mechanism between the base shell and the adjustable shell. The base shell has a fastening portion for non-adjustable fastening of the base shell on the motorcycle. The adjustable shell is placed on the base shell and are connected via the adjustment mechanism. The adjustment mechanism is configured to adjust the height and/or inclination of the adjustable shell in relation to the base shell. A motorcycle having the adjustable seat assembly is also provided.

An adjustable seat assembly for a motorcycle includes a seat pan having a base shell, an adjustable shell, and an adjustment mechanism between the base shell and the adjustable shell. The base shell has a fastening portion for non-adjustable fastening of the base shell on the motorcycle. The adjustable shell is placed on the base shell and are connected via the adjustment mechanism. The adjustment mechanism is configured to adjust the height and/or inclination of the adjustable shell in relation to the base shell. A motorcycle having the adjustable seat assembly is also provided.

An assembly for enabling continuous seat post function during extreme conditions is described and includes: a first valve at least partially, slidably disposed within a stationary piston and for controlling a first fluid pathway there through, wherein the first fluid pathway runs from a first portion and to a second portion of the oil chamber, wherein the stationary piston separates the oil chamber into the first portion and the second portion; and a second valve at least partially disposed within the stationary piston and disposed in series with the first valve and having a second fluid pathway disposed through the first valve and the second valve, being in parallel with the first fluid pathway, running from the first portion to the second portion of the oil chamber, and providing a bypass for oil to flow from the first portion to the second portion when the first fluid pathway is closed.

An assembly for enabling continuous seat post function during extreme conditions is described and includes: a first valve at least partially, slidably disposed within a stationary piston and for controlling a first fluid pathway there through, wherein the first fluid pathway runs from a first portion and to a second portion of the oil chamber, wherein the stationary piston separates the oil chamber into the first portion and the second portion; and a second valve at least partially disposed within the stationary piston and disposed in series with the first valve and having a second fluid pathway disposed through the first valve and the second valve, being in parallel with the first fluid pathway, running from the first portion to the second portion of the oil chamber, and providing a bypass for oil to flow from the first portion to the second portion when the first fluid pathway is closed.

A dropper seatpost with double gas chambers is revealed. The dropper seatpost mainly includes a hydraulic inner tube and an outer tube in which the hydraulic inner tube is moveably mounted. A second gas chamber is formed between the hydraulic inner tube and the outer tube. While increasing a height of a saddle mounted above the hydraulic inner tube, pressure of high-pressure gas in the second gas chamber not only improves speed and fluency of the hydraulic inner tube being lifted, but also optimizes concentricity and side force resistance of both the hydraulic inner tube and the outer tube. The high-pressure gas in the second gas chamber also reduces abnormal sound produced by bubbles. Each of two ends of the outer tube is provided with a seal member for protecting the outer tube from pollutants outside. Thereby both durability and service life are improved.

A dropper seatpost with double gas chambers is revealed. The dropper seatpost mainly includes a hydraulic inner tube and an outer tube in which the hydraulic inner tube is moveably mounted. A second gas chamber is formed between the hydraulic inner tube and the outer tube. While increasing a height of a saddle mounted above the hydraulic inner tube, pressure of high-pressure gas in the second gas chamber not only improves speed and fluency of the hydraulic inner tube being lifted, but also optimizes concentricity and side force resistance of both the hydraulic inner tube and the outer tube. The high-pressure gas in the second gas chamber also reduces abnormal sound produced by bubbles. Each of two ends of the outer tube is provided with a seal member for protecting the outer tube from pollutants outside. Thereby both durability and service life are improved.

A seat post assembly for a bicycle includes a first tube having a first distal end, and a second tube having a second distal end. The first tube is movable relative to the second tube to establish a distance between the first distal end and the second distal end. The distance is at a maximum distance when the first tube is in a first position relative to the second tube. The seat post assembly includes a seal disposed within the second tube and connected to the first tube or the second tube. The seat post assembly includes a piston coupled to the seal when the first tube is in the first position. A position of the seal relative to the second distal end is adjustable, such that the first position of the first tube relative to the second tube is adjustable via the coupling between the piston and the seal.

A seat post assembly for a bicycle includes a first tube having a first distal end, and a second tube having a second distal end. The first tube is movable relative to the second tube to establish a distance between the first distal end and the second distal end. The distance is at a maximum distance when the first tube is in a first position relative to the second tube. The seat post assembly includes a seal disposed within the second tube and connected to the first tube or the second tube. The seat post assembly includes a piston coupled to the seal when the first tube is in the first position. A position of the seal relative to the second distal end is adjustable, such that the first position of the first tube relative to the second tube is adjustable via the coupling between the piston and the seal.

The invention relates to a shock-absorbing seat tube, including an outer tube and an inner tube sleeved within the outer tube. The inner tube is adapted for connection to a bicycle saddle from below through a joint. The seat tube is provided with a height adjustment device having a supporting end inserted into the inner tube, and a shock-absorbing device disposed in the inner tube at a position above the height adjustment device and includes a fixing part and a damper part. The fixing part passes at its top end through the inwardly protruded portion of the inner tube and is arranged in the barrel portion of the inner tube. The damper part is arranged between the inwardly protruded portion and the supporting end.

The invention relates to a shock-absorbing seat tube, including an outer tube and an inner tube sleeved within the outer tube. The inner tube is adapted for connection to a bicycle saddle from below through a joint. The seat tube is provided with a height adjustment device having a supporting end inserted into the inner tube, and a shock-absorbing device disposed in the inner tube at a position above the height adjustment device and includes a fixing part and a damper part. The fixing part passes at its top end through the inwardly protruded portion of the inner tube and is arranged in the barrel portion of the inner tube. The damper part is arranged between the inwardly protruded portion and the supporting end.