Brompton C Line 12-Speed hi Bar 2026 Racing Green Folding Bike

The Brompton C Line 12-speed is a British-made steel folding bike built for urban living and mixed-use commuting. Handmade in London since 1975, it folds down to 25.3 inches tall by 23 inches wide by 10.6 inches deep in under 20 seconds, making it genuinely packable for trains, buses, or tucking under a café table. The 2026 Racing Green model weighs from 12kg, so it's manageable to carry up stairs or through crowded stations when needed.

The step up to 12-speed drivetrain is the main news here. The system combines a 3-speed Sturmey Archer internal hub gear with a 4-speed derailleur, giving a 402% gear range that matches or exceeds what you'd get on a traditional road or commuter bike. The chainset uses a 50-tooth ring with an integrated chainguard, and the derailleur is a patent-pending direct mount design paired with an 11-18 tooth sprocket range. This gives genuine climbing ability and cruising gears, all tucked into Brompton's compact frame. The Advance Rear Frame makes handling the folded bike easier too, with larger roller wheels that glide and steer smoothly when you're carrying it around.

Day to day, the steel frame with precision-drawn heat-treated tubing and hand-brazed joints delivers the stiff, direct ride Brompton owners expect. The 16-inch wheels with double-wall rims stay nimble in traffic, though they demand a bit more pedalling to hold momentum on longer flat sections. Schwalbe Marathon Racer tyres are puncture-resistant with reflective sidewalls, so the bike handles all-weather urban riding. Mudguards come as standard, dual-pivot caliper brakes provide reliable stopping power, and composite hinge clamps keep everything lightweight.

The Brompton Luggage System keeps the weight on the frame rather than the handlebars, so carrying loads stays stable and balanced. A front carrier block adaptor means you can add various Brompton bags without affecting handling. This particular bike comes with a rear luggage rack, which ordinarily costs an additional £129.99 and represents genuine added value. The bike has barely been ridden—just a handful of times since it's a 2026 model—and a gold-rated lock is included, which reflects the insurance requirements Brompton owners typically face.

The C Line suits commuters mixing cycling with public transport, people working from small flats or offices, or anyone who needs a genuinely portable bike for urban navigation. The 12-speed system makes it work far better than older Brompton models for hilly commutes or longer rides, though riders wanting a purely compact folder might find 12 speeds more than necessary.