Brompton A Line – 3 Part Steel Frame Folding City Bike

  • lekmin
  • Nov 02, 2022
Brompton folding bike

Cycling is one of the best ways to move around the city. Using a bicycle for your daily commute will not only spend less energy than walking, but you will also be able to reduce your carbon emissions as well as save some money on public transportation costs. Now, when you are looking for a bike to ride around town, you want a bike suitable for riding in an urban environment. We are of course talking about city bikes. Unlike mountain bikes and BMX bikes that are not only designed for off-road cycling but also tend to incur high maintenance costs, city bikes are specifically designed for riding on paved roads and asphalt surfaces, making them perfectly suited to getting you efficiently from the point. From point A to point B in urban areas, all of which also require minimal maintenance. This brings us to the Brompton A Line folding bike.

The Brompton A Line is a robust folding bike built for city riding with a one-size-fits-all-spec that integrates an original 3-part frame, a sleek, handcrafted steel frame fitted with genuine Brompton bike parts specifically designed to be extremely durable, a natural seating saddle that makes it very comfortable For riding in tandem with the riser handlebar, three easy-to-use pivot gears are finely tuned for rides through town, plus compatibility fittings that allow you to add your own bike parts when you get used to riding this bike.

Brompton folding bike
Brompton folding bike

With a highly durable steel frame, a highly versatile 3-part folding design that’s easy to stow away, and three pivot gears tuned specifically for urban cycling with asphalt pavement, this stylish folding bike is not only built to be ready to ride, but more importantly From that it is absolutely perfect for city riding.

Now, let’s take a little more detailed look at all of its specs, talk a little more about each of its bike’s unique parts and components, and see exactly what a folding city bike should offer you in the long run.

Design and Specifications

Starting with bike size, the Brompton A Line comes in a standard city bike size, while also being reasonably lightweight, weighing in at just 25.35 pounds. (11.49 kg). Although it is fairly lightweight, note that the bike is still fairly robust to be able to withstand the usual daily riding in the city.

Brompton folding bike
Brompton A-Line Folding Bike – Dimensions

Now, the main thing that makes this city bike unique is its original 3-part design, which finally makes storing the bike very easy once it’s fully folded.

When fully folded, the Brompton A-Line measures just 25.3 inches long by 23 inches high and just 10.6 inches wide, which means it barely takes up any space when you’re looking to stow it.

Thanks to it, you can easily place it almost anywhere, whether it is a small corner that is available at home or in the office, or even under your desk.

On top of its innovative folding design, this folding city bike also features a very durable chassis, with its main body made of a sleek, handcrafted, glossy white steel frame that comes specifically equipped with genuine Brompton bike parts designed to be ultra-durable for city riding. To ensure that users can keep this bike on the road for as long as possible, especially compared to other brands of city bikes.

To be more specific, the bike’s bright white handcrafted steel frame uses a precision-drawn, heat-treated steel tube main frame integrated with hand-welding and select auto-welded joints, combined with small-hand cold-rolled welding. Alloy steel tube back frame for the back side.

At the front of the bike’s steel frame is also a copper-welded steel fork that makes the Brompton A Line perfectly stable for riding on city sidewalks as well as for commuting from sidewalks.

Now, since this city bike is custom built with a one-size-fits-all specification in order to make it suitable for being ready to ride within urban environments by anyone, it also comes with two components that are primarily focused on user comfort.

The first of those components will be the A Line Saddle’s natural seating, which makes it extremely comfortable to ride. The bike saddle also comes with an integrated carrying handle that allows users to carry the bike more easily by hand when looking to stow away.

The bike saddle comes installed in a tubular Brompton Extended Chromoly seat post designed to fit a maximum internal leg of 35″ / 89 cm, which is securely locked in place by a composite seat clamp and rear tire clamp, with both covered with a sleek matte black finish. The bicycle seat saddle can be adjusted to three (x3) different seat post options (standard, extended, telescopic), allowing it to be adjusted for riders from 4ft 7ft 6ft 8in (140cm to 203cm) in height. .

Its other component that focuses on user comfort is the A Line riser handlebar, which is very comfortable to hold, as it comes with high-quality rubber grips on both handles.

As for its gearing, this city bike comes equipped with a Brompton 3 Speed ​​Shifter shifter that integrates a total of three (x3) easy-to-use pivot gears that come precisely tuned for rides across town. The bike’s three pivot gears are locked inside the center section of the rear wheel to keep it protected from water, gravel and shock, helping to ensure minimal maintenance.

Moving on to the bike’s drivetrain, know that the Brompton A Line uses a Brompton 3 Speed ​​Drivetrain system that has a 177% range, operates on a forged 6061 aluminum crank chain and is equipped with a 44T chainring and integral chainring.

As for its pedals, the bike comes with non-folding compound pedals and is well held by a square tapered bottom bracket. The bike pedals are very durable and very stable, and they even come installed with pedal deflectors. The bike frame also comes with front and rear reflectors on the front and rear sides of its steel frame that provide users with a 360-degree lighting system.

For the bike rear wheel we have double wall rim, 28 forks, standard 3-speed Brompton inboard gear hub, 13 tooth sprocket.

For her front wheel, we have a double wall rim, a 28-fork wheel that is attached to the Brompton front axle. Both bike frames are made of 349 x 35 puncture-resistant Schwalbe Marathon Racer tires, while their inner tubes are made of Schrader valves, which are very high quality, consider.

Finally, for the bike brakes, we have a set of high-end Brompton A Line brakes.

Last but not least, and as mentioned earlier, we would once again like to note that this folding city bike also supports fitting compatibility, allowing you to add your own bike parts to it when you get used to riding this bike.

Note, however, that although this city bike does not come with fenders (such as wheel caps) built into its wheels, you can still find some available (sold separately) at Brompton cycling websitePlus some other upgrade parts for the bike.

last thoughts

The Brompton A Line is a robust folding bike built specifically for city riding in a one-size-fits-all that integrates an original 3-part frame, a sleek, handcrafted steel frame fitted with genuine Brompton bike parts specifically designed to be extremely durable, and a natural-sitting saddle that makes it very comfortable For riding in tandem with the riser handlebar, three easy-to-use pivot gears that are finely tuned for rides through town, plus compatibility fittings allow you to add your own bike parts when you get used to riding this bike.

Brompton folding bike
Brompton folding bike

All in all, this stylish and cool folding bike was designed to bring anyone living in a city a super versatile and extremely portable city bike, built to last, comfortable and easy to ride right from the start.

If you’re interested in buying them, know that each bike is priced at $1,150. You can order it online now directly from Brompton The official bike shopping page.

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