Brompton seat pillar / post - steel - standard length

Brompton standard length seat post - silver

This is the standard length Brompton seatpost - made of steel

Length: 53.5cm / 21 inches

The Brompton seat post is available in 3 lengths and two colours

• Standard length - for riders up to 33 inch inside leg (this one)
• Extended length - for riders up to 35 inch inside leg - 6cm longer
• Telescopic - for taller riders

• Silver (this one)
• Black

Seat post compatibility:

The seat post is one of the components which is common across all Brompton folding bikes - so this silver standard length seat post would fit the following models:

• A Line
• C Line
• G Line
• P Line
• T Line

(In the early days of Brompton they used a titanium seatpost, then later there was also an aluminium seatpost available - these have now been discontinued - titanium due to supply issues and aluminium due to long term quality issues - the coating discoloured over time)

The Brompton seatpost has a 31.6 mm diameter through most of its length (with a flange at one end to stop it raising too far and a narrower end for the saddle to attach to)

The seatpost is installed on the Brompton from underneath (the flange at the bottom stops the seatpost being raised too far)

Remember: Never lubricate the seat post

We made this short video on how to remove and re-install a seatpost on your Brompton folding bike

Brompton 2021 Q part code: Q102033
Brompton Q part code: QSP0P
Brompton part number: 9037056