G Line
It goes as far as you go
Discover new colours - Brompton Blue and Lake Grey
The folding gravel bike built for the city and beyond
The most capable Brompton ever
Rigorously tested over 250,000 km, first to meet industry standards, then to meet ours, G Line goes where others can’t. Confidently tackle everything from dusty singletrack to rain-soaked cobbles.
Big on ride feel, compact in size
The G Line is made to take you anywhere. From city streets to rougher roads and longer days in the saddle, it delivers the ride feel of a full-size bike. At its heart is Brompton's iconic fold, transforming it into a compact package in seconds that's easy to store, roll and travel with.
Carry more
Brompton Bags sit securely on the front of your bike with one quick click. The unique mounting system places the weight on the frame instead of the handlebars for a more stable ride. Add in the rear roller rack and fork mounts, and you've got plenty of options for carrying everything you need.
Three G Line sizes
G Line comes in three easy-to-choose sizes based on your height. Small, medium or large. The single-size frame has varying stem and seatpost heights, developed and tested with a world-leading bike fit expert for the best ride experience.
Test ride the G Line
Take the G Line for a spin at your nearest Brompton store or authorised retailer.
G Line warranty and guarantee
Every G Line is backed by a 7-year unlimited mileage frame warranty and a 2-year warranty on non-wearing parts when you register your bike. We also offer a 28-day returns policy for added peace of mind.
Related G Line stories
How we built the G Line
Brompton has always been known for its 16” folding bikes, so how did we set about making a 20” folding bike?
Bikepacking Guide
Discover how the G Line's all-terrain capability, luggage-carrying versatility and compact fold make it an ideal companion for bikepacking adventures.
Top 10 folding bike accessories
From luggage solutions and lighting to essentials for everyday riding, the right accessories can make every journey better.
Find your perfect Brompton
We’ll match you with the right bike in just three quick questions.
Electric G Line
The most versatile e-bike in the world.
Electric Bike App
