
The Electric C Line 4-Speed delivers Brompton’s classic fold with a boost of electric power—perfect for daily riders, multi-modal commuters, and urban explorers. With Smart Pedal Assist, a lightweight 300Wh battery, and Brompton’s Superlight 4-speed gearing system, it’s quick off the mark, easy to charge, and fits effortlessly into life on the move.
Electric Bike Specifications
Weight
From 16.6 kg
Speed
4-speed
Material
Steel
Folded Size
25.3" H x 23'' W x 10.6'' D
Main Frame
Precision drawn heat-treated steel tubing with hand brazing and selected auto-brazed joints
Rear Frame
Hand brazed cold-formed micro-alloy steel tubing
Fork
Reinforced Electric specific steel brazed fork
Grips
Lock-on grips with soft-compound rubber adhered to an engineered core
Seatpost
Extended, Black (35")
Saddle
Standard
Seatclamp
Composite seat clamp and rear frame clip in matt black finish
Hinge Clamps
Composite hinge clamp levers
Pedals
Brompton Folding left hand and non-folding right-hand pedals
Drivetrain
4 inline sprockets, no hub gear, 163% range.
Number of gears
4-speed
Chainset
6061 forged aluminium crank with 50T chainring and integrated chainguard
Bottom Bracket
Integrated sealed bearing BB with cadence and torque sensor
Headset
Brompton headset
Shifters
Brompton 2 speed trigger shifter
Sprockets
4 inline sprockets, no hub gear.
Derailleur
Brompton Chain pusher
Rear Wheel
Double wall rim, 28 spoke, Brompton Wide ratio internal gear hub
Front Wheel
Single wall rim, 250W Brushless DC motor providing assistance up to 25 kmp/h
Tires
349 x 35C Schwalbe Marathon Racer. A puncture resistant tyre with a reflective sidewall
Tubes
Schrader valve
Mudguards
Included
Lighting
Dynamo
Pump
Brompton pump with flexible hose compatible with Schrader and Presta Valve
Rack
Not included
Brakes
Brompton Dual Pivot Calipers
On Bike Accessories
Lezyne Pump and Mounts
Battery
300Wh 36V with LED display. Range 20-45 miles . 5V 1.5A USB port to charge portable devices. 4-hour full charge using included 2A charger
Range
20-45 miles
Luggage
Essentials bag with 1.5L storage Optional: 20L City bag available separately
Connectivity
Brompton Electric iOS and Android apps available for download
Delivery & Aftercare
Built & checked by expert mechanics
Our experienced eBike technicians will build and inspect your bike before dispatch.
No hassle return in the first 30 days
If you aren't satisfied with your purchase, we accept returns providing the bike is in showroom condition and has covered under 5 miles.
Free & Fast Delivery in the UK
We provide free tracked delivery on all eBikes (excluding eCargo's).
Recommended Service Plan & Guarantee
Free 6-week health check & recommended service plan tailored to you. 2 years manufacturers warrantee on all eBikes.

