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Brompton G Line - Small - Space Black

Brompton G Line - Small - Space Black

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Brompton G Line - Small - Space Black
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£ 2,599.00 £ 2,599.00 (Tax included)

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Brompton G Line - Small - Space Black

The G Line - Gravel? Line range was introduced by Brompton with the 2024 lineup of bikes

The space black colour was added to the range for model year 2026 in autumn 2025

It has larger wheels than the traditional 16 inch Brompton size at 20 inches

Brompton G Line - Small - Space Black specification:

1. Frame
Main frame: Steel
Rear frame / triangle: Steel
Handlebar stem: Alloy
Front forks: Alloy


Folded size: 71cm wide x 68cm tall by 38cm deep (approx)

2 Colour
Main frame: Space Black
Rear frame / triangle: Space Black
Handlebar stem: Space Black
Front forks: Space Black
Decal: TBC
Detailing: Black

Also available in Adventure Orange, Forest Green and Traildust White colours

3. Size

Small (also available in Medium and Large)
The Brompton G Line only has one handlebar type - ride position is dictated by the stem length and seat post length
Handlebar width - 65cm

4. Gears / drivechain

8 speed Shimano Alfine hub gear system
54T front chainring - black (we can change to 44T or 50T should you prefer reduced gearing)
20T single rear sprocket
Brompton advance chain with connecting link - 114 links long
Brompton flat platform pedals (the right one is removable)

5. Front luggage system

The Brompton G line comes with a front carrier block fitted 

6. Mudguards / Rack

This bike comes with black mudguards and rack

7. Roller wheels

Large roller wheels help keep the bike stable when folded 

  • Front: 70mm
  • Rear: 80mm

8. Tyres / Tubes / Wheels / Brakes

Tyres:

Schwalbe G One with tan wall (ETRTO size 54-406) - tubeless ready

Note: If you would prefer the Continental Contact Urban tyres for a more commuting tyre feel / ride - we can change to these free of charge

Low rolling resistance and good puncture protection 

Tubes:

Presta / racing type valve - 6mm diameter

Wheels:

20 inch wheels

The wheels have black hubs, black spokes and black rims

The front wheel features a bolt through axle

The rear wheel features an 8 speed Shimano Alfine hub

Brakes:

Tektro / TRP Hydraulic disc brakes
140mm centre lock disc rotors front and rear

9. Saddle

Brompton standard saddle - 147mm wide

Note: If you would prefer the wider Brompton saddle (167mm wide) we can change to this for no extra charge

Mounting point under saddle for Brompton rear light (e.g. Brompton Cateye VIZ 150)

The saddle is attached to the seat post using the Brompton Pentaclip which allows for easy adjustment of saddle angle and fore / aft position

10. Seat height

Standard seatpost

A saddle height insert is included - we recommend you fit this only after riding the bike for a while

11. Suspension

Along with the new G 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 Be Seen Lights
  • Brompton Lezyne 500XL front light
  • Brompton VIZ 150 saddle mounted rear light