Brompton M6L Folding Bike 2021

This is a pre-owned Brompton M6L, a British-made steel folding bike built for commuters and urban riders who need a bike that folds small enough to carry on trains and buses or store in tight spaces. The 2021 model comes in black and weighs 12kg, making it substantial enough to ride smoothly but still manageable to lift and carry when needed. The iconic Brompton fold keeps the footprint compact, so it works well for people juggling cycling with other transport or living in flats where storage is limited.

The frameset is Brompton steel throughout—frame and fork both built from the brand's tried-and-tested tubing. The drivetrain is where this model stands out: it uses a 6-speed setup combining a Sturmey Archer 3-speed hub gear in the front wheel with a Brompton 2-speed derailleur on the rear, giving a decent range without the complexity of a traditional flat-bar setup. Shifting is handled by Brompton's own 2x3 shifters, and the brakes are Brompton rim calipers, simple and straightforward. A 50-tooth alloy crankarm at 170mm length suits riders of average build, and the chain is Brompton's own. This gearing arrangement handles urban hills well and keeps the bike low-maintenance, since hub gears don't need frequent attention the way derailleur-only systems do.

The wheels are 16-inch Brompton alloy rims fitted with Schwalbe Marathon Racer 35c tyres, which are robust urban rubber designed to resist punctures. They're not tubeless, so you'll get the traditional tube-and-tyre setup. The smaller wheel size is typical for folding bikes—it contributes to the compact fold and makes the bike nimble in traffic, though it does mean slightly more pedal revolutions per distance covered compared to larger wheels.

The finishing kit includes Brompton's mid-position handlebars, a standard Brompton seatpost, and a Fizik Aliante saddle. Everything is designed to keep the bike functional and foldable without extras getting in the way of the fold mechanism. This is a true commuter bike, not a bike built to accept racks and panniers or to be customised heavily. The mid-bar position gives a reasonable upright riding posture for city riding, offering decent visibility at traffic lights and junctions without being overly relaxed.

This particular bike is in excellent condition and comes with 12 months' warranty on the frame and 3 months on parts. The only wear noted is some marks on the driveside crank from use, which is cosmetic and typical of a pre-owned folding bike that's seen regular commuting. It's a solid choice if you need a proven folding bike for regular urban use and occasional longer trips by rail or car.