M4 Brompton l P Line Lunar Ice

The Brompton M4L Lunar Ice is a British-made steel folding bike designed for quick urban commuting and everyday city riding. The frame uses Brompton's characteristic fold mechanism, which collapses the bike into a compact, portable package suited to tight storage spaces, train journeys, and office storage. At this specification, the M4L is one of the lighter folding bikes in the Brompton range, making it genuinely practical to carry when needed.

This model uses the modern 4-speed Sturmey Archer hub gear setup with a caliper side-pull brake configuration. The hub gear system is straightforward to maintain and handles the typical undulations of urban riding without fuss. The M-type handlebars position you upright, which suits city cycling well and gives clear sightlines in traffic. Mudguards come as standard, so you're protected from spray and road grit in wet conditions. The 16-inch wheels are characteristic of Brompton bikes, making the fold genuinely compact and keeping the handling responsive through congested streets.

The Lunar Ice finish shifts from crisp silver to a subtle violet depending on the light, which is a practical bonus if you're after something that doesn't disappear into the urban grey. This particular bike is brand new, unridden, and comes with original documentation and warranty cover. A Spurs Bell is already fitted as a complimentary extra.

The M4L suits commuters who regularly fold their bike away between sections of their journey, or anyone living in a flat or small space where a conventional bike simply won't fit. It's equally at home for mixed urban use—cycling the last mile to the station, then folding away for the train. For longer distances or hillier terrain, you might find yourself wanting more gears, but for typical city commuting, this setup covers the ground effectively.