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Brompton seat post sleeve with locating extrusion - stock photo View larger

Brompton seat post sleeve, excl. adhesive

QSTSLV-UR

Brompton

Brompton seat pillar sleeve, excludes adhesive

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£10.00

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Brompton seat post sleeve

The Brompton seat sleeve sits inside the frame allows the seatpost to slide up and down smoothly

This is a replacement seat post sleeve with locating key

If your seat post starts to slip - rather than keep tightening the seat post release bolt (which can ultimately result in frame damage if over-tightened) it may be that the seat post sleeve needs replacing

It will wear over time due to the friction of the seat post going up and down - originally it needed to be replaced by a Brompton dealer as a reaming tool should be used to remove the old seat post sleeve

Compatibility

This Brompton seat post sleeve is compatible with the following Brompton models:

  • B75 / A Line
  • C Line / C Line Electric
  • P Line / P Line Electric

It is NOT compatible with:

  • T Line
  • G Line

Note: This should be held in place with rubberised superglue

Prior to 2025 two sleeves were provided: 

  • one with locating key
  • one without the locating key

Since 2025 the one without the locating extrusion is no longer provided as it is used on Brompton's from before 2001

So if you own a very old Brompton - you will simply need to file the off the locating extrusion to remove it

Please Note:

It is recommended that the Brompton Seat post sleeve is fitted by a Brompton dealer, as special tools are needed

We can fit it for you in our Sunningdale shop (Labour charges will apply)

Brompton Q part code: QSTSLV-UR
Brompton part number: 9040377
Brompton Q code: Q102103

Reviews

Grade 
02/08/2015

Easier to fit than you might think

The old one needs to be removed by breaking it inwards, as it is quite firmly glued in place. Clean up the old glue with a scraper of some kind and ensure the inside of the seat tube is clean and dry. Glue in the new insert with an adhesive that stays rubbery when dry. I used Unibond Repair Extreme. Ensure any excess glue is wiped away (you don't want to glue your seatpost in place!), fit the seatpost and leave it clamped up overnight to give the glue a really good chance to stick the sleeve to the frame. Brompton say the new sleeve needs reaming in situ, a factory job (imagine the hassle of that unless you live in west London) but mine is perfect - fingertip pressure to close the clamp, no slippage but the seat easily slides down under its own weight when unclamped.

  • 14 out of 15 people found this review useful.

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Brompton seat post sleeve, excl. adhesive

Brompton seat post sleeve, excl. adhesive

Brompton seat pillar sleeve, excludes adhesive

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