G Line with Roller Frame, 8-speed
Buy GLine Roller Frame
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 us famous. It’s your one-bike solution to the city and beyond.
Buy GLine Roller Frame
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.
For more information on how to choose, watch our useful video guide.

Big on ride feel, compact in size

The most capable Brompton ever

Game-changing comfort

G Line. The most versatile bike in the world.
The all-new one-bike solution for the city and beyond. Big on ride feel and compact.
You can ride G Line anywhere and take it everywhere.
Happily deliver 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.
You can run a rack, mudguards, and bags; add water
bottles, and even store your toolkit inside the frame.
In a world full of possibilities, G Line is your one-bike route to everywhere.
Weight
From 14.8 kg
Speed
8-speed
Material
Steel
Folded Size
28.3″ / 72cm (D), 26.2″ / 67cm (H), 16″ / 41cm (W)
Main Frame
Hand-brazed steel main frame
Rear Frame
Steel
Fork
Aluminium fork with mounting bosses
Grips
Ergonomic grips
Seatpost
Small: Standard Black, Medium: Extended Black, Large: Telescopic Black
Saddle
Superlight
Seatclamp
G Line Aluminium
Hinge Clamps
Self-aligning hinge clamps
Pedals
Wide Platform Quick Release
Drivetrain
Brompton 8-sspeed drivetrain
Number of gears
8 gears
Chainset
54T
Headset
Brompton headset
Shifters
Microshift
Derailleur
Shimano Alfine Hub System
Rear Wheel
20″
Front Wheel
20″
Tyres
Schwalbe G-One All Round 54-406. Tan wall
Mudguards
Included
Lighting
Reflectors
Pump
Not included
Rack
Included
Brakes
Tektro Hydraulic Disc brakes with 140mm Rotor
Front Carrier
Large-diameter front carrier block adaptor for all types of Brompton luggage
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