Brompton C Line Electric M4L (2026): the classic steel Brompton reimagined with electric power. Hand-brazed in London and powered by Brompton’s 345Wh Greenway system, this 4-speed folding e-bike delivers the perfect balance of durability, comfort, and compact practicality for everyday commuting. Jump to: What • How • Why • FAQ WHAT is the Brompton C Line Electric M4L? The C Line Electric M4L (2026) combines Brompton’s legendary all-steel frame with electric assist technology for effortless city travel. Equipped with a 345Wh Greenway battery providing up to 90km range, this bike folds down in seconds to a compact size of 585 × 565 × 270mm. It’s the ideal folding e-bike for riders seeking reliability, practicality, and the unmistakable feel of a classic Brompton. Weight: From 17.6kg Speed: 4-speed Material: Precision-drawn, heat-treated steel tubing Folded Size: 585 (L) × 565 (H) × 270 (W) mm Battery: 345Wh Greenway – up to 90km range, full charge in approx. 5 hours Rear Motor: 250W power, 24Nm torque Drivetrain: Brompton 4-speed system, 163% range Chainset: 6061 forged aluminium crank with 54T chainring Brakes: Brompton dual-pivot calipers Fork: Brompton steel fork Tyres: 16" Schwalbe Marathon Racer Pedals: Folding left pedal and non-folding right pedal Seatpost: Extended, black (35") Saddle: Brompton standard Lighting: Lezyne e115 StVZO front light Mudguards: Included Roller Wheels: 66mm Rack: Not included Accessories: Zip Bag Small & Bell HOW does it ride? The C Line Electric maintains Brompton’s iconic handling while adding smooth pedal-assist power through its compact rear-hub motor. The balanced weight distribution and ergonomic grips provide a confident ride, while the four carefully spaced gears make light work of city gradients. With integrated lighting and fast-folding convenience, this bike is designed for seamless transitions from road to train to office. Ride feel: Classic Brompton agility with added electric boost Assistance: Smooth and quiet with up to 90km range Comfort: Extended seatpost and ergonomic cockpit setup WHY choose the C Line Electric M4L? The Brompton C Line Electric combines traditional craftsmanship with modern e-assist efficiency. Perfect for urban riders who want a dependable steel frame and the freedom to travel further with less effort. Designed for simplicity, reliability, and unmatched portability, it’s an icon of sustainable city travel. Best for: City commuters, train travellers, and everyday riders Not for: Off-road or long-distance touring Highlights: Classic steel feel • Electric assist • Compact fold • 90km range Frequently Asked Questions FAQs about the Brompton C Line Electric M4L (2026) How far can I ride on a full charge? Up to 90km on a single charge, depending on terrain, assist level, and rider weight. How long does it take to charge? Approximately 5 hours to fully charge the 345Wh battery using the included smart charger. Can I use Brompton luggage with this bike? Yes — it comes with a front carrier block adaptor compatible with all Brompton luggage options. Does it include mudguards or a rack? Yes, mudguards are included; the rear rack is optional on this model. Need more details? Contact our experts or visit our Folding Bike Guide. More like this: Shop Folding Bikes • Explore Brompton Range Assembly & Setup Professionally assembled and checked by Cytech-qualified mechanics. Choose Click & Collect or home delivery with expert setup. Delivery / Click & Collect Fast UK delivery or FREE Click & Collect from your nearest JE James Cycles store. Finance & Support Available with 0% finance and Cycle to Work options. Speak to our team for expert sizing and setup advice. On occasion, without notice, manufacturers may change product design and/or specifications.
