Standard Height Seatpost Black | Brompton Bicycle USA
Any decent extra long suspension seatpost options out there? : r/foldingbikes
SM SunniMix Bike Seat Post Aluminum Alloy Extra Long Tube 23.62inch(600mm) Replacement Bicycle Seatpost φ 31.8mm for Brompton Folding Bike - Gold : Amazon.ca: Everything Else