BROMPTON folding bike M1L Black Single Speed

This is a 2019 Brompton M1L, a British-made steel folding bike in black that's been rarely used. It's a single-speed machine, which means no gears to maintain and a lighter overall package compared to multi-speed Brompton models. The bike comes set up with a 44/16 gear ratio, which works reasonably well for gently rolling terrain but isn't designed for serious climbing. A spare gearset of 54/12 with chain is included, which is better suited to flat, level riding if you want to swap the ratio depending on where you're cycling.

The 16-inch wheels are typical for Brompton folding bikes, making the bike compact and nimble around town. The fold mechanism is the signature Brompton lateral design, reducing the bike to a size that fits under a desk or into a train luggage rack. Being single-speed without hub gears keeps the weight down compared to other models in the range, which matters when you're carrying the bike or lifting it onto public transport regularly.

Without any internal gearing, there's nothing to adjust or maintain mechanically. The steel frame is durable and designed for everyday use. This particular bike is available for collection from Milton Keynes.