Feature:
illustrate:
1-The height of the-seat tube is adjustable (within the range of 0-100mm, any height is acceptable)
2-The-seat tube has a shock-absorbing function at any height of the-seat tube. The longer the stroke, the softer the shock-absorbing function.
3-When adjusting the height of the-seat tube, lift the yellow handle, then forcefully stretch the-seat tube to the appropriate position, and then put down the handle. the-seat tube will lock the height and have a shock-absorbing function.
[Relief] Why does the-seat tube not rise automatically or does it rise slowly when the handle is lifted?
Answer: 1-The-seat tube adopts an oil-air for structure. The oil acts as a damper, making the suspension comfortable and not as stiff as a spring, improving the riding quality.
2-The-seat tube relies on air pressure to rebound. When the switch is lifted, due to the slow speed and slow release of air pressure, the-seat tube rebounds very slowly or cannot rise. This is a normal phenomenon. When the rider sits on the-seat, the-seat tube is under great force, and the air pressure is compressed sharply and released quickly, so the-seat tube can bounce up quickly to absorb shock.

Specification:
Product name: Manual lift shock absorber seattube
Specifications: 33.9*375mm - The diameter of the-seat tube itself is 30.9mm, and after adding the reducing sleeve, the diameter becomes 33.9mm
Material: aluminum alloy
Structure: Oil and gas for shock absorber
Stroke: 100mm
Weight: 657g

Package Included:
Manual lift shock absorber seattube*1