Suspension Systems and Methods for Bicycles

A bicycle seat suspension assembly comprising:

• a parallelogram linkage comprising a frame link configured to engage a bicycle seat tube, a seat link configured to engage a bicycle seat, an upper link, a lower link, a first pivot pivotally connecting a first end of the lower link to the frame link, a second pivot pivotally connecting a second end of the lower link to the seat link, a third pivot pivotally connecting a first end of the upper link to the frame link, and a fourth pivot pivotally connecting a second end of the upper link to the seat link, wherein the first, second, third, and fourth pivots define a parallelogram;
• an upper spring assembly having a first end that pivotally engages the frame link below the third pivot and a second end that pivotally engages the upper link;
• and
• a lower spring assembly having a first end that pivotally engages the frame link below the first pivot and a second end that pivotally engages the lower link below the second pivot;