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Brompton seat post sleeve, excl. adhesive

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Brompton seat pillar sleeve, excludes adhesive

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