The Joseph Kuosac Telescopic SeatPost for Brompton allows for greater variability for proper fit. The lower pillar is shorter than Brompton’s and the telescoping post is longer than the Brompton’s extension. Joseph Kuosac lower pillar is 445mm compared to Brompton’s lower pillar at 510mm.
In fact, the upper telescoping post is 27.2mm in diameter which is the industry standard for seatposts. Therefore, any standard 27.2 seatpost can fit into the lower pillar giving you a lot of flexibility. You can even insert a suspension seatpost for more comfort on rough terrain.
This post comes complete with a 400mm x 27.2mm JK seatpost with integrated saddle clip.
Weight comparison: JK telescopic seatpost is 700grams. The Brompton telescopic seatpost is 820 grams.
Color – Black or Silver/Black
Shipping fee – $18.95