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  • Brompton Telescopic Seatpost in Black
  • Brompton Telescopic Seatpost in Silver
  • Brompton Extended Seatpost in Black
  • Brompton Standard Seatpost in Black
  • Brompton Extended Seatpost in Silver
  • Brompton Standard Seatpost in Silver








We currently have more than 5 in stock.

Genuine Brompton Seatposts. Brompton have three different seatposts so that you can always get the perfect fit no matter what height you are. Available as Standard, Extended, or Telescopic. All seatposts feature a flared bottom to prevent the seatpost coming out when unfolding and include a press-fit seatpost bung.

Standard. Ideal for smaller to average height riders this seatpost will suit the majority of people from with an inseam or 26" - 32".

Extended. Sitting 6cm higher than standard this seatpost is designed for the taller rider and is great for people with a 28.5" - 34.5" inseam. This seatpost does sit higher when folded though so is not suitable for many travel cases.

Telescopic. The most versatile of seatposts. Perfect for tall riders or shared bikes. This seatpost gives an extra 7" over the standard post yet only sits 2cm higher when folded. Suitable for riders with an inseam of 27" -39".

  • Genuine Brompton Components
  • Brompton Standard, Extended and Telescopic Seatpost
  • Standard: Steel main shaft with a length of 535mm
  • Extended: Steel main shaft with a length of 596mm
  • Telescopic: Steel main shaft with an Aluminum top shaft and alloy & plastic quick release system -  540mm - 715mm - Ideal for shared bikes or taller riders who travel allot
  • Please refer to the size guide for correct length
  • Silver or gloss black finish
  • Press-fit seatpost bung included
  • 31.6mm diameter
STANDARD 26" - 32" (66cm - 81cm)
EXTENDED 28.5" - 34.5" (72cm - 87cm)
TELESCOPIC 27" - 39" (68.5cm - 99cm)
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Canada: We use UPS, Purolator, Canpar or Canada Post within Canada. All applicable Provincial Taxes are charged at checkout. Orders may take 1-2 business days to process. A tracking number will be provided by email.

USA: We use UPS or Canada Post/USPS in the USA. No US or Canadian Tax is charged at checkout and all cross-border Fees and Duties are prepaid so there are no surprises. Orders may take 1-2 business days to process. A tracking number will be provided by email.

Brompton Bicycles - Curbside Cycle

A BIT ABOUT BROMPTON: If you were to walk into the store and look at a Brompton we would say there are three things you should look for in a folding bike. All of them are fairly obvious. One, the bike should ride well - and, on a small wheeled bike that's tricky because there's a fine line between maneuverability (which is a virtue) and twitchiness (which is a vice). Two, the bike should fold well - otherwise you're blood pressure will rise and you'll curse the day you bought it. Third, it should be transportable, or highly storable - because that's the whole point, right?

Brompton is the only company we've seen that answers all three criteria - and believe us, we've tried every brand out there. The reason others can't compete is because Brompton has answered a fundamental engineering problem. If a bike is going to unfold to a large footprint (which takes the twitch out) then it is unfolding to a bigger bike - and by all logic, a bigger bike unfolded would be a bigger bike folded. So, it's pretty much true that for most folding bikes they either have great rideabilty but poor transportability or vice versa. And nearly all of them are a mess to fold.

Not Brompton. Brompton has designed the Platonic form of all folding bikes. The bike folds to the smallest size on the market, unfolds in a highly precise and easy manner, and has the same axle-to-axle footprint as a hybrid bike. How did they do this? By not only designing a clever frame, but also designing some 1200 proprietary parts that make everything fit - and fit perfectly. Oh, and nearly all of this is made in England. No wonder this bike has a cult following.

FAQ's Coming Soon: Got a question? Email us at online@curbsidecycle.com

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