The Brompton C-Line 12 Speed Mid BRITISH RACING GREEN is available at the following locations.
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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.
From 12 kg
12-speed
Steel
25.3" H x 23'' W x 10.6'' D
Precision drawn heat-treated steel tubing with hand brazing and selected auto-brazed joints
Brompton Advance Rear Frame
Steel brazed fork
Lock-on grips with soft-compound rubber adhered to an engineered core
Standard, Black (33")
Standard
Composite seat clamp and rear frame clip
Composite hinge clamp levers
Brompton Folding left hand and non-folding right-hand pedals
Brompton 12-speed drivetrain, 402% range
6061 forged aluminum crank with 50T chainring and integrated chainguard
Square taper bottom bracket
Brompton headset
Brompton 4 speed derailleur shifter & 3 speed hub gear shifter
11-18 Tooth
Patent-pending direct mount 12-speed derailleur
Double wall rim, 28 spoke, Brompton Wide ratio 3 speed internal gear hub
Double-wall rim, 28 spokes laced to a Brompton front hub
349 x 35C Schwalbe Marathon Racer. A puncture resistant tire with a reflective sidewall
Schrader valve
Included
Reflectors
Advance Roller Wheels
Not included
Brompton Dual Pivot Calipers
Front carrier block adaptor for all types of Brompton luggage
Lezyne Pump and Mounts & Brompton Bell
* Specifications are subject to change without notice
| Colours | Black Matte, BRITISH RACING GREEN, Bumblebee Yellow, Turkish Blue |
| Sizes | Mid |
| Brand | Brompton |
| Barcodes | 5053099109180, 5053099134687, 5053099134823, 5053099134830 |
| SKUs / Part Numbers | M12L/mTGg/rTGg/FCB/50TBCL, MLL0ABB00B000000B0060120B, MLL0BBB00B000000B0060120B, MLL0GBB00B000000B0060120B |
Please note: Manufacturers can sometimes change the specification of the products from time to time.