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Brompton P Line 4-speed folding bike

Brompton P Line Version 2 folding bike complete with carbon forks 
P Line
  • Handlebar Type - Mid
  • Colour - Matt Black
  • Brand - Brompton

Brompton P Line 4-speed folding bike

16 inch wheel size lightweight Bompton folding bike with 4-speeds available in a choice of colours and handlebar styles

The 4-speed version of the P Line was originally introduced in 2020, now (in mid-2026) it has been refreshed with a new front end including:

  • Carbon forks
  • New headset
  • Alloy stem
  • New handlebars

Gearing wise it uses the same 4 derailleur gears which launched with the original P Line

Not the exact specification you were looking for?

Many of the components can be changed before collection delivery - some at no cost and some for an extra charge - for example

No cost specification changes:

  • Change from standard to extended length seatpost for taller riders
  • Change saddle from 147mm width to wider 167mm saddle

Will add cost (though we won't charge labour for making the change):

  • Add advanced rear roller rack
  • Change from standard to telescopic seatpost
  • Change tyres to a different model (e.g. Continental Contact Urban to Marathon Plus)


Brompton P Line 4-speed specification:

1. Frame

Steel Main frame and stem
Carbon forks
Titanium advance rear triangle

Folded size: 585mm wide x 565mm tall by 270mm deep


2. Colour

  • Main frame: Choice of colours
  • Handlebar stem: Black
  • Forks: Black carbon
  • Rear triangle: Black
  • Decal: Depending upon frame colour
  • Detailing: Black

3. Handlebars

Choice of three styles

  • Low rise / straight bars (previously known as the S type) - for a more sporty ride
  • Mid rise / classic Brompton style bars (previously known as the M type)
  • High rise for a more upright riding position (previously known as the H type)

These are now a more standard 31.8mm diameter making changing to 3rd party bars even easier - they are also wider than on the previous generation giving more control

4. Gears / drivechain

Gears:

  • 4-speed advance Brompton derailleur system
  • Integrated 4-speed gear shifter on left side of bars - black - for derailleur
  • Integrated 3-speed gear shifter on right side of bars - black - for hub gears

Drivechain:

  • 50T front chainring - black
  • Removable left hand pedal - black (stows in the back of the front fork)
  • Non-removable right hand pedal - black
  • 106 link Brompton advance chain with connecting link
  • Derailleur chain tensioner
  • 4 rear rear sprockets (11T / 13T / 15T / 18T)

5. Front luggage system

The P line comes with the front carrier block fitted so you can easily add Brompton luggage to make transporting your stuff easier without affecting the ride 

6. Mudguards / Rack

This bike comes with black advance mudguards
No rack / roller frame is included - though an advance roller rack can be retro-fitted / added at an extra cost

7. Roller wheels

New advance roller wheels help keep the bike stable when folded 

8. Wheels / Tyres

Classic 16 inch (ETRTO 349) Brompton size wheels with double wall rim 

Black Hub / rim (the braking surface is still silver) with black spokes

  • 28 spokes  on the rear
  • 20 spokes on the front

Continental Contact Urban tyres - black / reflective
Low rolling resistance and good puncture protection 

Presta / racing type valve with6mm diameter

9. Saddle

Brompton superlight saddle with the fixing point for the Cateye or Brompton Be Seen rear light

Note: If you prefer the wider (slightly heavier) 167mm saddle - just let us know and we can swap for no extra charge

The Brompton saddle is attached to the seat post using an adjustable Brompton Pentaclip - black

10. Seatpost / Seat height

Standard seatpost for riders with an inside leg measurement of up to 33 inches - colour: black

Note: If you are a taller rider - up to 35 inch inside leg - then an extended length seatpost can be fitted at no extra cost at time of ordering - just let us know

For very tall riders a telescopic seatpost is available at extra cost 

Saddle height insert is included - we recommend you fit that after riding the bike for a while

11. Suspension

Along with the new advance rear triangle introduced on the P Line came a new advance suspension block

12. Lighting / reflectors

Front and rear reflectors are included

It's easy to retrofit battery lighting (at an extra cost) such as

  • Brompton Spanning solo rear light
  • Brompton CatEye 500lm front light
  • Brompton Be Seen light set


We made this video on the new features of the P Line version 2:



Specifications

Brompton Wheels
Brand Brompton
Others
Handlebar Type Mid, Low, High
Colour Palm Green, Plum Red, Matt Black, Pacific Lacquer, Cloud Metallic