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Brompton Electric G Line with SuperRoll+ e-Motiq system - 4-speed in Space Black Small

£3,699.00

Electric G Line – One Electric Bike That Does It All

The Electric G Line is built as a complete system from the ground up, designed to work seamlessly in the city and beyond. It rides with the confidence of a full-size bike, handles mixed surfaces with ease, and still folds down small enough to store and travel easily. Thoughtfully engineered, practical, and ready for everyday riding or bigger adventures, this is a true one-bike solution from Brompton.

Why You’ll Love It

  • 20” wheels
    Large enough for comfort and control on longer rides, yet compact enough to fit neatly within the fold. Fitted with custom puncture-resistant tyres.

  • Mudguards & Roller Frame (standard)
    Full-length mudguards keep road spray off, while the lightweight roller frame adds stability for carrying cargo and allows the folded bike to roll smoothly.

  • Smart control display
    Handlebar-mounted screen with Adaptive Range Estimation, Start Assist, and clear ride information.

  • Adventure-ready design
    Confident handling, rugged front carrier block, UL-certified safety, and up to 50 miles of assisted range.

  • Always improving
    The companion app enables over-the-air updates, keeping your bike features up to date over time.

Electric G Line – One Electric Bike That Does It All

The Electric G Line is built as a complete system from the ground up, designed to work seamlessly in the city and beyond. It rides with the confidence of a full-size bike, handles mixed surfaces with ease, and still folds down small enough to store and travel easily. Thoughtfully engineered, practical, and ready for everyday riding or bigger adventures, this is a true one-bike solution from Brompton.

Why You’ll Love It

  • 20” wheels
    Large enough for comfort and control on longer rides, yet compact enough to fit neatly within the fold. Fitted with custom puncture-resistant tyres.

  • Mudguards & Roller Frame (standard)
    Full-length mudguards keep road spray off, while the lightweight roller frame adds stability for carrying cargo and allows the folded bike to roll smoothly.

  • Smart control display
    Handlebar-mounted screen with Adaptive Range Estimation, Start Assist, and clear ride information.

  • Adventure-ready design
    Confident handling, rugged front carrier block, UL-certified safety, and up to 50 miles of assisted range.

  • Always improving
    The companion app enables over-the-air updates, keeping your bike features up to date over time.

Electric freedom, without limits.

A person sitting on the wall with black Brompton G line folding bike.

Big on ride feel, compact in size

The Brompton G Line is designed as a true one-bike solution for both city riding and adventures beyond. It rides like a full-size bike, with a comfortable and confident frame geometry, yet still folds down into a compact package that’s easy to store and transport.

A person with half folded Brompton G line folding bike in country side setting.

Experience the power of innovation

Brompton's all-new compact electric system is engineered from the ground up in the UK. Featuring a robust rear motor and a cutting-edge battery rigorously tested for unmatched reliability and safety. Stay ahead with over-the-air updates and seamless integration with our bike app for your smartphone—designed to elevate your ride to new heights.

Brompton G Line Fit Guide

Electric 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.

  • Weight: From 19.5 kg

    Weight without battery: 15.7 kg

    Speed: 4-speed

    Handlebar Control: Included

    Material: Steel

    Folded Size: from 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: Standard Wide

    Seatclamp: G Line Aluminium

    Hinge Clamps: Self-aligning hinge clamps

    Pedals: Wide Platform Quick Release

    Drivetrain: 4-speed Brompton (163%)

    Number of gears: 4 gears

    Chainset: 50T

    Headset: Brompton headset

    Shifters: Microshift

    Sprockets: 11-13-15-18 Tooth

    Rear Wheel: 20"

    Front Wheel: 20"

    Tyres: Schwalbe G-One All Round 54-406. Tan wall

    Mudguards: Included

    Lighting: AVY Integrated

    Pump: Not included

    Rack: Included

    Brakes: Tektro Hydraulic Disc brakes with 140mm Front / 160mm Rear

    Front Carrier: Large diameter front carrier block adaptor for all types of Brompton luggage

    On Bike Accessories: G Line essential battery bag & Brompton Bell

    Battery: 345-wh with LED display. 4-hour full charge using included 2A charger

    Range: 20-45 miles (30-60km)

    Luggage: Essentials bag with 1.5L storage

    Connectivity: Brompton Electric iOS and Android apps available for download.