*Please Note: Full specification will be added when available. Images are representative and may display alternate specifications to that supplied.*
Test rides available now from our Notting Hill branch. Contact the store for further details.The all-new one-bike solution for the city and beyond. Big on ride feel. Compact in size. You can ride G Line anywhere and take it everywhere.
Happily delivering on all sorts of surfaces. Confident in all conditions. Comfortable hour after hour. G Line is expertly engineered to give you everything you need for the rough, the smooth and the beautiful.
Expertly engineered to go where others can’t. G Line is the first ever Brompton with the ride feel of a full-size bike. Brand-new geometry, 20” wheels, game-changing comfort and capability. All holistically designed around the fold that made Brompton famous. It's your one-bike solution to the city and beyond.You can run a rack, mudguards, and bags, add water bottles, and even store your toolkit inside the frame. And with the original Brompton fold, the ever-ready G Line transforms into a compact, locked package in under 20 seconds. Goes on trains. Travels in car boots. Stores in small spaces (including one-person tents).
In a world full of possibilities, G Line is your one-bike route to everywhere.
Key Features & Benefits:
- Folded Size:Goes on trains. Travels in car boots. Stores in small spaces (including one-person tents).
- Steel Frame:Lightweight & durable.
- Shimano Alfine 8 speed:Wide range of gears for taking you through the city and beyond.
Full Specification:
- Main Frame:Steel, hand brazed in London, Metallic Texturized finish
- Rear Frame:Steel
- Fork:Aluminium fork with mounting bosses
- Number of Gears:8
- Gear Shifters:Brompton 8 speed Ergonomic Trigger shifter
- Chainset:TBC
- Chainrings:54T
- Hinge:Anti-rotation hinges
- Rear Cassette:Shimano Alfine Hub System
- Rear Derailleur:Shimano Alfine Hub System
- Bottom Bracket:TBC
- Pedals:Brompton Wide Platform with quick-release left hand pedal
- Front Wheel:20" Brompton
- Rear Wheel:20" Brompton, Shimano Alfine 8-speed Hub, 307% Ratio
- Front Tyre:Schwalbe G-One Allround 20" x 54mm (54-406) (tubeless ready)
- Rear Tyre:Schwalbe G-One Allround 20" x 54mm (54-406) (tubeless ready)
- Brakes:Tektro Disc TRP Flatmount Hydraulic Disc, 140mm Rotors
- Handlebars:Brompton
- Handlebar Grips:Brompton Ergonomic
- Headset:Brompton headset
- Stem:3 types fixed to size, with water bottle bosses
- Saddle:Brompton Superlight saddle
- Seatpost:Standard Seatpost on Small, Extended Seatpost on Medium, Telescopic on Large, Gloss Black
- Accessories:Large diameter front carrier block adaptor for all types of Brompton luggage, Rear Roller Frame rack, mudguards
- Folded Size:730 (L) x 690 (H) x 402 (W) mm
- Weight:Approx. 14.9 kg (Medium with rack)
Manufacturers reserve the right to change specifications without notice based on availability at the point of assembly.
| Small | Medium | Large |
| Rider Height (cm) | 152 - 168 | 168-183 | 183-198 |
| Rider Height | 5'0" - 5'6" | 5'6" - 6'0" | 6'0" - 6'6" |
| Stack (mm) | 677 | 687 | 697 |
| Reach (mm) | 477 | 483 | 504 |
| Seatpost | standard | extended | telescopic |
FAQ
What terrain can I ride G Line on?
It’s the most capable Brompton yet, with the ability to deliver on all sorts of surfaces, including: gravel paths, tow paths, asphalt and well-maintained off-road routes. With the feel of a full-size bike.
How does G Line fold?
With the original Brompton fold, the ever-ready G Line transforms into a compact, locked package in under 20 seconds.
Does G Line luggage fit on my C, P, T Line Front Carrier Block?
Yes, all non-electric Brompton bags use the same mounting system on the front of the bike. There is a unique luggage range for Electric G Line that will be available at launch. Please note that Electric C and P Line luggage will not be compatible with the new Front Carrier Block.
How many gears does G Line have?
The G Line has 8 gears with a 307% gear ratio/range. It has a Shimano Alfine 8-speed hub gear. The Electric G Line has the Brompton 4-speed gearing system with a 160% ratio/range.
To go tubeless, you must buy valves and sealant (sold separately)
Warranty Information for Brompton:
All new Brompton bicycles registered with Brompton are covered by a 7-year unlimited mileage warranty against manufacturing and material defects for the main frame components, commencing from the date of sale.
All Electric parts on the Electric P Line and Electric C Line are covered by a 2-year warranty. 3 years if you register your bike.
Other non-wearing parts on the bicycle (e.g. crank arms, brake calipers, mudguards, etc.) and other parts and accessories are covered by a 2-year warranty against manufacturing and material defects.
Bicycles not registered are subject to a 2-year warranty on the mainframe components, commencing from the date of sale.
For full warranty policy please visit brompton.com