Cane Creek Thudbuster on Brompton

Long distance suspension seat post installed on Brompton folded bike. What do you need: Cane Creek Thudbuster LT G427.2mm diameter tubeEnsure you don’t pay for old model(UK link) https://www.bikemonger.co.uk/cane-creek-thudbuster-lt-g4-21413-p.asp Brompton Telescopic Seat Posthttps://www.condorcycles.com/products/brompton-telescopic-seat-post Cane Creek Seat post ShimSize 27.2-29.2mm. However check with caliper, as I waste time and money for buying wrong size advised on…