The Brompton Seatpost bung is a rubber bung which fits into the underside of the seat post, acting as a cushion to prevent clunking against the ground when it is lowered down. The bung also helps to prevents Brompton bikes fitted with Eazy Wheels rolling, when not in use.
This is the updated press-fit version, new for 2016.
Seat Post Bung Press Fit
Weight
24 g
Material
Rubber
Colour
Black
Fitting
The easiest way to fit the rubber bung to the seat pillar is to have the bicycle folded, lying on its side, or inverted / upside down
Compatibilty
Suitable on all Brompton folding bikes.