Brompton
C Line / 12-Speed
We have one C Line (12 speed, Mid size in Dune Sand color,) and one G Line (8 speed, Medium size in Adventure Orange color) to view and test ride at the store. All bikes need to be ordered, and take roughly 7-10 days to arrive.
Pairs well with
C Line / 12-Speed
The Brompton C Line 12-speed is the ultimate city companion, blending iconic British craftsmanship with cutting-edge portability. Proudly handmade in London since 1975, our bikes transform from a full-sized ride into a compact, locked package in under 20 seconds. Whether navigating bustling streets, hopping on a train, or tucking it under a café table, the C Line is designed to move with you effortlessly. Now featuring a new 12-speed system, it delivers an impressive gear range—matching, if not exceeding, traditional road and commuter bikes—all while maintaining Brompton’s renowned compact design. The Advance Rear Frame takes portability even further, allowing riders to glide and steer their folded bike with ease, thanks to larger, smoother-rolling wheels.
Personalisation has always been at the heart of Brompton, and the C Line 12-speed continues this tradition with three striking new colours: the bold Flamingo Pink, the sophisticated Amethyst Lacquer, and the classic Turkish Green. Its unique Brompton Luggage System ensures a stable ride, even when carrying heavy loads, by keeping weight on the frame rather than the handlebars. Whether you're commuting, adventuring, or simply enjoying the ride, the C Line 12-speed is a versatile, stylish, and practical bike that redefines urban mobility.
The original steel folding bike built for the city.
Proudly handmade in London since 1975. It transforms from a go-anywhere vehicle to a small, locked package in under 20 seconds.
Available in the widest range of colors and options.
7-year frame warranty
Register your bike with Brompton and get your extended 7-year frame warranty. And on e-bikes, a 3-year electric system warranty.
Choose your gears
4 or 12-speed. For flatter cities, short rides and even infrequent use, less and simpler is often better, and lighter. But other times, you might want - or need - more.
Carry everything you need
From your laptop to labradoodle. The unique Brompton Luggage System places the weight on your frame instead of the handlebars. So, when carrying loads, your ride remains brilliantly stable.
Options for everyone
Available in our widest range of colors, with a huge selection of accessories and upgrades, so you can keep on rolling for longer.
The original folding bike
You can go anywhere with your C Line. Weighing about the same as a small suitcase, it's easy to lift, carry and store. Going further? Fold halfway, to tow, roll or glide.
Welcome on rush-hour trains. Tucks in car trunks or under restaurant tables. You don’t lock and leave a Brompton, it travels with you. So, every day just works.
New 12-speed system
The latest development is the C Line 12-speed, brought in to accompany the 4-speed option. First seen on the P Line model, Brompton's unique 12-speed system is an expertly engineered solution that gives riders more gears and more range. It takes portability of Brompton’s classic bike to a whole new level, thanks to an Advance Rear Frame which allows owners to glide and steer their folded bikes through railway stations and entrance foyers with the seat post locked halfway up.
Nothing folds like a Brompton folds
Never bettered, just refined. It's the original and still the best.
The best, since 1975
Built on fifty years of expertise, Brompton bikes are made for real life and a long life.
Loved by you
C Line owners gave it an average of 4.7 out of 5 stars on Trustpilot, so you know this bike will tick all the boxes.
Ride low, mid or high
With handlebar options that mimic the feeling of road bikes, hybrids and cruisers.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
Shipping Information
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Customer Support
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FAQ’s
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Contact Us
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Specifications
Weight
From 26.4 lb
Speed
12-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
Brompton Advance Rear Frame
Fork
Steel brazed fork
Grips
Lock-on grips with soft-compound rubber adhered to an engineered core
Seatpost
Standard, Black (33")
Saddle
Standard
Seatclamp
Composite seat clamp and rear frame clip
Hinge Clamps
Composite hinge clamp levers
Pedals
Brompton folding left pedal
Drivetrain
Brompton 12-speed drivetrain, 402% range
Chainset
6061 forged aluminum crank with 50T chainring and integrated chainguard
Bottom Bracket
Square taper bottom bracket
Headset
Brompton headset
Shifters
Brompton 4 speed derailleur shifter & 3 speed hub gear shifter
Sprockets
11-18 Tooth
Derailleur
Patent-pending direct mount 4-speed derailleur
Rear Wheel
Double wall rim, 28 spoke, Brompton Wide ratio 3 speed internal gear hub
Front Wheel
Double-wall rim, 28 spokes laced to a Brompton front hub
Tires
349 x 35C Schwalbe Marathon Racer. A puncture resistant tire with a reflective sidewall
Tubes
Schrader valve
Fenders
Included
Lighting
Reflectors
Roller Wheels
Advance Roller Wheels
Rack
Not included
Brakes
Brompton Dual Pivot Calipers
Front Carrier
Front carrier block adaptor for all types of Brompton luggage
On Bike Accessories
Lezyne Pump, Mounts & Brompton Bell
Disclaimer
* Specifications are subject to change without notice
