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Description
Brompton C Line 12 Speed Low Bar Folding Bike 2025
The Brompton C Line 12 Speed Low Bar Folding Bike 2025 is the ultimate city companion, combining iconic British craftsmanship with exceptional portability. Handmade in London since 1975, it folds into a compact, locked package in under 20 seconds, making it perfect for navigating busy streets, commuting by train, or stowing under a cafe table.
Equipped with a 12 speed system, it delivers a gear range comparable to traditional road and commuter bikes while preserving Brompton’s signature compact design. The Advance Rear Frame enhances portability, allowing the folded bike to roll smoothly on larger wheels for effortless transport.
Technical Specification
| 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 aluminum 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 | 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 and Mounts, Brompton Bell |
Size Guide
Brompton C Line 12 Speed Low Bar Folding Bike 2025 Sizing
Delivery & Returns
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