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2006665 / 54308210508122

Product Details

Brompton C Line 12-speed Folding Bike

For commuter cyclists, the Brompton C Line 12-speed transforms the daily journey. Folding into a compact, locked package in under 20 seconds, it slips easily onto trains, under office desks, or into tight hallway spaces, no bike racks or locks required. The innovative Advance Rear Frame takes portability further, letting you glide and steer the folded bike smoothly through stations and buildings using larger, stable wheels. It’s a folding bike that genuinely works with public transport, making mixed-mode commuting faster, simpler, and stress-free.

A true 12-speed folding bike with road-bike performance

Unlike traditional folding bikes, the Brompton C Line 12-speed delivers a gear range that rivals full-size road and commuter bikes. Brompton’s expertly engineered 12-speed system gives you the flexibility to tackle steep climbs, accelerate confidently in traffic, and cruise comfortably on longer leisure rides, all without compromising the iconic compact fold.

British craftsmanship, custom style, and practical versatility

Handmade in London since 1975, the Brompton C Line reflects iconic British craftsmanship and attention to detail. From commuting to cafés to leisurely adventures, the Brompton C Line 12-speed Folding Bike is a stylish, practical investment that redefines urban cycling for both everyday riders and weekend explorers. Whether you’re riding across the city or heading out for a relaxed weekend spin, this is a folding bike that feels lively, efficient, and rewarding to ride.

Handlebar options: 

  • Low: The straight handlebar. For a sporty, more forward position.
  • Mid: The riser handlebar. For a natural, relaxed position.
  • High: Riser bar with extra height. The ultimate relaxed cruising position. 
Features
  • Handlebar Options: Low - Mid - High
  • Claimed Weight: From 12 kg
  • 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: Superlight CNC aluminium pedal set with left-hand QR pedal
  • Drivetrain: Brompton 12-speed drivetrain, 402% range
  • Chainset: 6061 forged aluminium crank with 50T chainring and integrated chainguard
  • Bottom Bracket: Square taper bottom bracket
  • Headset: Brompton headset
  • Shifters: Brompton 4-speed derailleur shifter and 3-speed hub gear shifter
  • Sprockets: 11-18 Tooth
  • Derailleur: Patent-pending direct mount 12-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
  • Tyres: 349 x 35C Schwalbe Marathon Racer, puncture-resistant with a reflective sidewall
  • Tubes: Schrader valve
  • Mudguards: Included
  • Lighting: Reflectors
  • Roller Wheels: Advanced 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: Brompton Bell
Specifications
Model
C Line 12-speed
Bottom Bracket Standard
Square Taper
Brakes [Kind]
Rim
Brakes [Maker]
Brompton
Brakes [Model]
Dual Pivot Calipers
Cassette [Gearing]
11-18
Chainring [Gearing]
50
Crank [Maker]
Brompton
Crank [Model]
6061 forged aluminium crank with 50T chainring
Discipline Compatibility
Commute
E-Bike
No
F Hub [Maker]
Brompton
Family
C Line
Fenders Mounts
Yes
Fork [Brake Type]
Rim
Fork [Material]
Steel
Fork [Wheel Size]
16"
Frame [Material]
Steel
Frame [Travel]
0 mm
Frameset
No
Gearing [Configuration]
1x
Gearing [Kind]
Conventional
Gender
Unisex
Handlebar [Kind]
Flat
Handlebar [Material]
Aluminium
Headset [Maker]
Brompton
R Hub [Maker]
Brompton
Rack Mounts
No
RD [Maker]
Brompton
RD [Model]
Direct Mount 12-speed derailleur
Saddle [Maker]
Brompton
Seatpost [Kind]
standard
Seatpost [Maker]
Brompton
Seatpost [Material]
Steel
Shifters [Maker]
Brompton
Shifters [Model]
4-speed derailleur shifter and 3-speed hub gear shifter
Shifting
Mechanical
Sub Family
C Line
Suspension Configuration
Rigid
Tires [Maker]
Schwalbe
Tires [Width]
35 mm
Wheels [Configuration]
Front+Rear
Wheels [Kinds]
Clincher
Wheelset [Maker]
Brompton
Wheelset [Material]
Aluminium
Product code
2006665 / 54308210508122
Size Guide
SizeSmallMediumLarge
Rider Height152 - 168cm168 - 183cm183 - 198cm
Stack (MM)677687697
Reach (MM)477483504
SeatpostStandardExtendedTelescopic
Brompton G Line
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Free UK delivery on orders over £50. Orders are dispatched within 1-2 working days and typically arrive 1-2 working days later.

Return unused items in their original packaging within 30 days of delivery. Return postage is £3.50.

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