Brompton Electric C Line 4 Speed - e-Motiq system 2026 - Electric Folding Bike





The Brompton Electric C Line 4 Speed combines Brompton’s iconic folding design with intelligent e-Motiq motor assistance. Lightweight, agile, and hand-built in London, it’s the ideal companion for modern city riders on the move.
Key Features:
- Frame: Precision-drawn steel, hand-brazed with Brompton folding geometry
- Fork: Steel brazed fork for strength and ride comfort
- Drivetrain: Brompton 4-speed derailleur with 163% gear range
- Brakes: Brompton dual-pivot caliper brakes
- Wheels: 16" double-wall rims with Schwalbe Marathon Racer tyres
- Other: Compact 20-second fold with SuperRoll mobility modes
- Finance: Available with 0% APR finance
Drive Information:
- Motor: Brompton rear hub motor, 250W with 24Nm torque
- Battery: 345Wh Greenway battery, up to 90km range
- User Interface: New Brompton handlebar control screen
Built on over 50 years of Brompton expertise, the Electric C Line 4 Speed takes everything riders love about the iconic folding bike and adds intelligent electric power. Hand-built in London using precision-drawn, heat-treated steel tubing and brazed joints, it delivers the same responsive, lively handling that Brompton riders trust — now enhanced with smooth, efficient pedal assistance.
At the heart of the bike is the new e-Motiq system, developed specifically for Brompton. The 250W rear hub motor delivers a responsive boost with 24Nm of torque, giving just the right level of assistance for hills, headwinds, and quick getaways. It’s powered by a 345Wh Greenway battery, offering up to 90km of range and recharging fully in around five hours. The handlebar-mounted control screen provides clear ride data and easy access to power modes, keeping your ride intuitive and connected.
The e-Motiq system is smart, too — it learns your riding style over your first 100km, refining power delivery and range predictions every few rides for a personalised experience. The result is natural, confidence-inspiring assistance that adapts to you, not the other way around.
Brompton’s famous folding mechanism remains a highlight. Fold or unfold in around 20 seconds, and roll effortlessly thanks to the SuperRoll mobility system, which keeps the bike stable and secure when moved folded. Whether hopping on a train, stowing under a desk, or wheeling through a station, the Electric C Line moves with you seamlessly.
The 4-speed drivetrain with a 163% gear range gives flexibility for stop-start city riding, while Brompton dual-pivot caliper brakes provide controlled, reliable stopping power. The 16" Schwalbe Marathon Racer tyres offer puncture resistance and grip, perfect for urban streets and smooth paths alike.
Every Brompton Electric is hand-finished in London using energy from over 90% renewable sources, combining craftsmanship with sustainability. It’s not just a bike — it’s a practical tool, a trusted travel companion, and a daily dose of riding joy.
With its combination of classic design, modern technology, and everyday practicality, the Brompton Electric C Line 4 Speed – e-Motiq System redefines what a city e-bike can be: compact, capable, and full of character.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | Precision drawn heat-treated steel tubing with hand brazing and selected auto-brazed joints |
| Headset | Brompton headset |
| Front Brake | Brompton Dual Pivot Calipers |
| Rear Brake | Brompton Dual Pivot Calipers |
| Rear Mech | Brompton 4-speed drivetrain, 163% range with Brompton Chain pusher |
| Shifters | Brompton 4-speed derailleur shifter |
| Speed | 4 |
| Rims | Double-wall rim, 20 spokes |
| Front Hub | Double-wall rim, 20 spokes laced to a Brompton front hub |
| Rear Hub | Brompton Rear Motor 24Nm of Torque and 250W of Motor Power |
| Front Tyre | 16" Schwalbe Marathon Racer |
| Rear Tyre | 16" Schwalbe Marathon Racer |
| Seat Post | Extended, Black (35") |
| Saddle | Standard |
| Chainset | 6061 forged aluminium crank with 54T chainring and integrated chainguard |
| Bottom Bracket | Square Taper |
| Cassette | 11-18 Tooth |
| Pedals | Brompton Folding left hand and non-folding right-hand pedals |
| Battery Size (WH) | 345Wh Greenway - Up to 90km range with 5-hour full charge |
| Motor | Brompton Rear Motor 24Nm of Torque and 250W of Motor Power |
| User Interface | New Brompton Handlebar Control Screen |
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Brompton Folding Bike Size Guide
All Brompton bikes have the same size frame and with the standard seatpost fitted are suitable for riders with an inside leg measurement up to 84cm or 33".
Longer seatposts are available for those with inside leg measurements over 84cm.
|
Seatpost |
Inside Leg (Centimetres) |
Inside Leg (inches) |
|
Standard |
Up to 84 |
Up to 33” |
|
Extended |
84 - 89 |
33” – 35” |
|
Telescopic |
Over 89 |
Over 35” |
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Brompton Electric C Line 4 Speed - e-Motiq system 2026 - Electric Folding Bike
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