Brompton G-Line

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Coming mid-2025

The most versatile folding bike in the world.

The all-new Brompton G Line redefines what a folding bike can be. With the ride feel of a full-sized bike and the legendary Brompton fold, G Line is built for all-day comfort, effortless portability, and go-anywhere capability.

From brand-new geometry and 20" wheels to the widest handlebars and tyres ever fitted to a Brompton, every detail is engineered for unmatched balance, control, and joy—on city streets or off the beaten track.

Key Highlights

• Game-Changing Comfort:
  An entirely new frame, larger 20” wheels, and wide tyres deliver the feel and stability of a full-size bike—with the added convenience of Brompton’s iconic fold.

• All-New Electric System:
  G Line is our most advanced electric Brompton yet. The integrated e-system is designed from the ground up for seamless performance, whether you're zipping across town or exploring further afield.

• Built for Adventure:
  Ride it in the city, on gravel paths, or wherever the day takes you. G Line is ready.

• Engineered to Fit You:
  Available in three sizes—Small, Medium, Large—each with optimised stem and seatpost lengths developed with leading bike fit experts for comfort and control.

• Shimano Alfine 8-Speed Hub:
  Smooth shifting with an impressive 307% gear range, perfect for tackling hills or cruising flats.

Tech Specs at a Glance

• Wheel Size: 20”

• Gearing: Shimano Alfine 8-speed internal hub

• Sizes: Small (474 mm reach), Medium (481 mm), Large (502 mm)

• Lighting: Available with or without front/rear lights

• Warranty: 7 years (frame, with registration)

• Fold & Park Mode: Signature Brompton fold + self-supporting park position

• Compatible Luggage: G Line supports all Brompton front carrier bags