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.
Brompton Seat Post Bung Press Fit
$15.00Price
