Brompton G Line 8 speed 2025 - Folding Bike
The Brompton G Line 8-Speed is designed to offer the ride feel of a full-sized bike with the convenience of a compact fold. Its 20” wheels, wider handlebars, and thoughtfully engineered frame provide unmatched comfort and balance, making it ideal for both city commuting and off-road adventures. Tested over 250,000 km, the G Line confidently handles a variety of terrains, from rough single tracks to slick cobbles. With disc brakes and durable components, it’s built to perform in all conditions, ensuring a smooth, reliable ride wherever you go.
Key Features:
- Frame: Hand-brazed steel main frame
- Fork: Aluminium fork with mounting bosses
- Drivetrain: Shimano Alfine 8-speed hub system
- Brakes: Tektro Hydraulic Disc brakes with 140mm rotors
- Wheels: Brompton lightweight rims, 20" Schwalbe ONE tyres with puncture protection
- Other Features: Compact Brompton fold, integrated chainguard, customisable with racks, mudguards, and accessories
- Available with 0% APR finance
The G Line’s intuitive design delivers comfort and stability for long rides while maintaining the portability Brompton is known for. With a folding time of under 20 seconds, you can easily take it on public transport, store it in small spaces, or pack it for your next adventure. Confident, durable, and versatile—G Line is your all-in-one solution for city riding and beyond.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | Hand-brazed steel main frame |
| Fork | Aluminium fork with mounting bosses |
| Headset | Brompton headset |
| Front Brake | Tektro Hydraulic Disc brakes with 140mm Rotor |
| Rear Brake | Tektro Hydraulic Disc brakes with 140mm Rotor |
| Brake Lever | Tektro Hydraulic |
| Shifters | Shimano Alfine |
| Speed | 8 |
| Rims | Brompton Lightweight Rim |
| Front Hub | Superlight alloy front hub with hex key axle |
| Rear Hub | Shimano Alfine Hub System |
| Front Tyre | Schwalbe ONE with Addix Race rubber mix and V-Guard puncture protection |
| Rear Tyre | Schwalbe ONE with Addix Race rubber mix and V-Guard puncture protection |
| Seat Post | Small - Standard Black, Medium - Extended Black, Large - Telescopic Black |
| Saddle | Brompton Superlight saddle. |
| Chainset | 6061 forged aluminium crank with 54T chainring and integrated chainguard |
| Bottom Bracket | Square taper bottom bracket |
| Pedals | Wide Platform Quick Release |
Brompton G Line Size Chart
|
Bike Size |
Height CM |
Height Feet Inches |
|
Small |
152 – 168 cm |
5’0” – 5’6” |
|
Medium |
168 – 183 cm |
5’6” – 6’0” |
|
Large |
183 – 198 cm |
6’0” – 6’6” |
Brompton G Line Geometry
|
|
Small |
Medium |
Large |
|
Stack |
676mm |
687mm |
696mm |
|
Reach |
474mm |
481mm |
502mm |
|
Seatpost |
Standard |
Extended |
Telescopic |
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