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Brompton P Line 12-speed Mid - Midnight Black Demo

Brompton P Line 12-speed Mid - Midnight Black Demo

Brompton P Line 12-speed Mid - Midnight Black
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Brompton P Line 12-speed Mid - Midnight Black

The P Line - Performance Line range was introduced by Brompton with the 2022 lineup of bikes

The main benefit over the standard (or C Line) range of Brompton folding bikes is weight.

The 12 speed version was introduced in 2024

Gearing wise it uses 4 derailleur gears combined with 3 internal hub gears - which give 12 speeds in total

Brompton P Line Explore Mid Midnight Black specification:

1. Frame

Superlight:
Steel Main frame and stem
Titanium forks
Titanium advance rear triangle


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

2 Colour

Main frame: Midnight Black 
Handlebar stem: Midnight Black to match main frame
Forks / rear triangle: Black
Decal: Black
Detailing: Black

3. Handlebars

Mid rise / classic Brompton style bars (previously known as the M type)

4. Gears / drivechain

12 speeds in total combining the 4 speed advance Brompton derailleur system with a 3 speed hub gear system
Derailleur chain tensioner
50T front chainring - black
106 link Brompton advance chain with connecting link
Superlight removable left hand pedal - black
Super light non-removable right hand pedal - black
4 rear rear sprockets 
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

5. Front luggage system

The P line comes with the front carrier block fitted 

6. Mudguards / Rack

This bike comes with black advance mudguards
No rack / roller frame is included - though it can be retro-fitted

7. Roller wheels

New advance roller wheels help keep the bike stable when folded 

8. Tyres / Wheels

Continental Contact Urban folding tyres (our favourites) - black / reflective
Low rolling resistance and good puncture protection 
16 inch (ETRTO size 349) wheels with double wall rim

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

The wheels have black hubs, black spokes and black rims (the braking surface is still silver)

Schrader / car type 8mm valve 

9. Saddle

Brompton superlight saddle, this superlight saddle features chromoly rails, a carbon reinforced base and lightweight padding, with the fixing point for the Cateye rear light 

10. Seat height

Standard seatpost for riders with an inside leg measurement of up to 33 inches
(If you are taller - up to 35 inch inside leg - then an extended length seatpost can be fitted at no extra cost)
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 P Line comes a new advance suspension block

12. Lighting / reflectors

Front and rear reflectors are included

It's easy to retrofit battery lighting such as:

  • Brompton Spanning solo rear battery light
  • Brompton Cateye 500lm rechargeable front light
  • Brompton Be Seen front and rear light set

We made the below video about the Brompton P Line and its features when it first came out:

Please note that the specifications of the wheels has changed from the video and now they have the C Line rims with the new P Line spokes and hubs