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Brompton G Line folding bike

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Brompton G Line - the Brompton with the 20 inch wheel
G Line
  • Colour - Adventure Orange
  • Size

Brompton G Line - Medium - Adventure Orange

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

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

Brompton G Line - Medium - Adventure Orange 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: Adventure Orange
Rear frame / triangle: Adventure Orange
Handlebar stem: Adventure Orange
Front forks: Adventure Orange
Decal: Gold

3. Size

Medium (also available in Small and Large)
The 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 with single 20T rear sprocket
54T front chainring - black (also available as 50T or 44T - we can change at no extra cost)
Brompton advance chain with connecting link - 114 links
Brompton flat platform pedals (the right one is removable)

5. Front luggage system

The G line comes with a front carrier block fitted 

6. Mudguards / Rack

This bike comes with black mudguards and rack

7. Roller wheels

New larger roller wheels help keep the bike stable when folded 

8. Wheels / Tyres

20 inch wheel size

TRP / Tektro hydraulic disc brakes

The wheels have black hubs, black spokes and black rims

Presta / racing type valve

Schwalbe G One with tan wall (ETRTO size 54-406) - tubeless ready
Low rolling resistance and good puncture protection 

If you would like to change to Continental Contact Urban tyres for lower rolling resistance and designed primarily for on-road use - we can make this change at no additional cost (note that the Contact Urban tyres can not be made tubeless)

9. Saddle

Brompton saddle

10. Seat height

Extended length seatpost

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 Cateye VIZ150 rear light - mounts on the Brompton saddle
  • Brompton Lezyne G Line front light with bracket 
  • Brompton G Line Be Seen light set

Specifications

Colour Adventure Orange, Space Black, Traildust White, Forest Green
Size small, medium, large