New
C LINE
C Line with Advance Roller Frame - 12-speed
The original icon
12-speed
All the range of – and sometimes even more than a road, hybrid, commuter or city bike, all with the convenience of the compact Brompton package.
New Advance Rear Frame
The most portable C Line ever - you can now steer and glide with you seat post locked halfway. New bigger, better Roller Wheels go from street to building with ease.
The most compact folding bike
From a go-anywhere bike into a small, locked package in under 20-seconds. Everything folds, even the pedal.
Super portable
Lift, carry and store. Or fold halfway to tow, roll or glide. Like a small suitcase, your Brompton moves through the day easily - everything connects.
Ride low, mid or high
With handlebar options that mimic the feeling of road bikes, hybrids and cruisers.
New 12-speed system
The latest development is the C Line 12-speed, brought in to accompany the 2 and 6-speed options. 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.
Great reasons to buy online
28-day guarantee
See how easily a Brompton fits into your life. If, for some reason, it doesn’t work for you, simply send it back to us and we’ll reimburse you for the bike.
Fast, free and convenient delivery
With most bikes shipped within 48 hours, you can get your Brompton sent to your home, workplace or even your granny’s house for free. Or you can take advantage of our Click & Collect service at your local Brompton dealer.
Flexible ways to pay
We accept all major debit and credit cards as well as easy financing options like Klarna. Or it’s super easy to save up to 39% with Cyclescheme.
C Line with Advance Roller Frame - 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.
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.
12-speed
From 12.5 kg
Steel
Specification
Weight
From 12.5 kgSpeed
12-speedMaterial
SteelFolded Size
25.3" H x 23'' W x 10.6'' DMain Frame
Precision drawn heat-treated steel tubing with hand brazing and selected auto-brazed jointsRear Frame
Brompton Advance Rear FrameFork
Steel brazed forkGrips
Lock-on grips with soft-compound rubber adhered to an engineered coreSeatpost
High - Extended Black (35"), Mid & Low - Standard Black (33")Saddle
StandardSeatclamp
Composite seat clamp and rear frame clipHinge Clamps
Composite hinge clamp leversPedals
Brompton Folding left hand and non-folding right-hand pedalsDrivetrain
Brompton 12-speed drivetrain, 402% rangeChainset
6061 forged aluminum crank with 50T chainring and integrated chainguardBottom Bracket
Square taper bottom bracketHeadset
Brompton headsetShifters
Brompton 4 speed derailleur shifter & 3 speed hub gear shifterSprockets
11-18 ToothDerailleur
Patent-pending direct mount 4-speed derailleurRear Wheel
Double wall rim, 28 spoke, Brompton Wide ratio 3 speed internal gear hubFront Wheel
Double-wall rim, 28 spokes laced to a Brompton front hubTyres
349 x 35C Schwalbe Marathon Racer. A puncture resistant tire with a reflective sidewallTubes
Schrader valveMudguards
IncludedLighting
ReflectorsRoller Wheels
Advance Roller WheelsRack
IncludedBrakes
Brompton Dual Pivot CalipersFront Carrier
Front carrier block adaptor for all types of Brompton luggageDisclaimer
* Specifications are subject to change without notice, product imagery is for illustrative purposes onlyReviews & Questions
C Line with Advance Roller Frame - 12-speed
Delivery & Returns
HOME DELIVERY
Enjoy free delivery on all orders over £50. £4.95 delivery fee for any orders under £50. We aim to dispatch your order within 2 working days; sometimes this can be longer during busy periods. Once your order has left our warehouse, we’ll send you an email with tracking information. High-value items over £100 will require a PIN number, which is supplied to you by the courier; you will need to give this PIN to the courier on delivery.
Your bike will arrive ready to ride and all the kit you need to assemble the saddle yourself.
CLICK AND COLLECT TO YOUR LOCAL BIKE SHOP
Collect your Brompton bike from our nationwide network of accredited retailers and from our Brompton Junctions. Your bike will be expertly prepared and be ready to ride straight away. Any additional parts and accessories on your order will be sent with your bike.
RETURNS
Brompton is committed to quality; if our products have failed you in any way, please return them and we will either exchange them or give you your money back. If the product is faulty or has arrived damaged, we will reimburse the cost of return postage. Unwanted items may be returned within 28 days at your cost.
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