G Line

It goes as far as you go

What is the Brompton G Line?

The iconic folding bike, built to go further.

G Line combines the ride feel of a full-size bike with Brompton's compact fold. Bigger wheels and confident handling make it our most versatile bike yet.

G Line specs and key details

Powerful hydraulic disc brakes bring confidence to every ride. Bigger 20-inch wheels smooth out rough roads, while the aluminium fork and integrated mounting bosses open up more ways to carry what you need.

Available colours
Weight	From 13,9 kg
Material	Steel
Sizes	S, M or L
Gears	8
Folded size	67cm H x 41cm W x 72cm D 26.2" H x 16" W x 28.3" D
Tyres	Schwalbe G-One All Round
Included	Platform pedals Front luggage adaptor Reflectors

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.

Try Brompton

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.