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Description
Brompton C Line 12 Speed High Bar Folding Bike 2025
The Brompton C Line 12 Speed High Bar Folding Bike 2025 is the ultimate city companion, blending iconic British craftsmanship with cutting-edge portability. Handmade in London since 1975, it folds into a compact, locked package in under 20 seconds, making it ideal for navigating busy streets, commuting by train, or tucking under a café table.
Now featuring a 12 speed system, it offers an impressive gear range comparable to traditional road and commuter bikes, all while maintaining Brompton’s renowned compact design. The Advance Rear Frame enhances portability, allowing the folded bike to glide smoothly on larger, rolling wheels.
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 High Bar Folding Bike 2025 Sizing
Delivery & Returns
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