BromptonC Line 4-speed Folding Bike
Designed to make daily travel smoother, the Brompton C Line 4-speed folds down in just 20 seconds into a compact, lightweight package that fits neatly on trains, in car boots, or under your desk. For commuter cyclists, this means total freedom—no worries about parking, theft, or storage. Refined geometry and modernised components deliver a confident, nimble ride through busy streets, while powerful brakes provide precise control in all conditions. It’s a folding bike built to improve your everyday commute, year after year.
Simple, versatile 4-speed gearing for joyful riding
The 4-speed system is the heart of this do-it-all folding bike. Perfectly tuned for urban riding and gentle adventures further afield, it offers smooth, reliable shifting and a gear range that covers flat roads, rolling terrain, and everyday inclines with ease. Leisure cyclists will appreciate the responsive handling, comfortable ride, and sense of agility that makes every journey, whether a relaxed weekend spin or a quick trip to the shops—feel engaging and fun.
British craftsmanship, custom style, and practical versatility
Handmade in London for over 45 years, the Brompton C Line 4-speed reflects iconic British engineering and sustainability, finished with durable powder coating and built using energy from over 90% renewable sources. Highly customisable and famously long-lasting, it’s a bike that adapts to your lifestyle, whether commuting, travelling, or exploring new places. The Brompton C Line 4-speed Folding Bike isn’t just a mode of transport; it’s a dependable, stylish workhorse that opens up more ways to ride, every single day.
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.
Technical Specification
| Handlebar Options | Low – Mid – High |
| Claimed Weight | From 12 kg |
| Speed | 4-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 4-speed drivetrain |
| Chainset | 6061 forged aluminium crank with 50T chainring and integrated chainguard |
| Bottom Bracket | Square taper bottom bracket |
| Headset | Brompton headset |
| Shifters | Brompton 4-speed trigger shifter |
| Sprockets | 11-13-15-18 Tooth |
| Derailleur | Brompton Chain Pusher |
| Rear Wheel | Double-wall rim,28 spokes laced to a Brompton rear 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 |
| 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 |





















































































































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