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Folding bike buyer’s guide

These days, you have a lot of choice when deciding what folding bike to buy. That wasn’t the case when the first Brompton was built 50 years ago, but as the old saying goes, you know you’re onto a good idea when everyone else starts to copy it. 

Our advice on making your way through the journey is to prioritise comfort, quality and care – and to find a bike that fits your budget. 

To help you on your road to folding freedom, we created this folding bike guide that covers all the essential information. From telling your titanium from your steel, to balancing build quality with budget, and not forgetting the exciting world of hinge clamps. 

Read on to discover which folding bike is best for you. 

Why a folding bike? The unexpected benefits

There are loads of benefits to folding bike ownership. Here are just a handful of our favourites.

Seamless multi-modal commuting: Most folding bikes, and particularly Brompton models, are compact enough to fit into a car boot, or in the luggage rack on trains and buses. This makes them perfect for combining different modes of transport on your way to your destination. Check out our dedicated folding bike commuting guide for more on the magic of multi-modal.

Unbeatable space-saving: At the end of your journey the bike can accompany you into the office or be safely tucked away at home. This is especially handy in situations like caravanning, sailing or #vanlife where space is at a premium. 

Being able to store your bike indoors also removes the need to chain up the bike to keep it safe from theft – a common concern for many bike owners. Not only that, being left out in the elements is bad for a bike, so having it inside will keep it working brilliantly for longer between services.

Travel companion: Another fantastic benefit of folding bikes is the ease with which they can join you on your holidays. They pack down small, can be taken on planes, and once you’re at your destination give you a whole extra dimension of freedom as you explore a new country.

Urban agility & convenience: You can’t do much better than a folding bike for city living. Not only do they have all the benefits we mentioned above for storing in an apartment where space is limited, they also have nimble handling and a good upright riding position, helping you to weave about the streets.

The facts of folding: mechanisms, size & portability

Every folding bike tells a story with its unique folding method. Brompton’s intuitive folding mechanism is a benchmark in the industry – you can fold down your bike in under 20-seconds – making it a top pick for those who fold and unfold their bikes multiple times a day.

But how do folding bikes fold? Generally, folding bike frames are crafted from multiple parts held together by hinge clamps. These quick release hinge clamps easily allow you to fold and unfold your bike. Some models of bike also have folding pedals, so your bike is even more compact when folded down.

Many Brompton riders will tell you that, after a few false starts, they quickly got the hang of how to fold their bike. The most important thing is to remember your folding order.

 

Keeping it clean: One of our favourite things about the Brompton folding method is the way it keeps all the dirtier parts of the machine – the ones that really attract the grease and grime – on the inside.

Folded dimensions: The folded size of your bike is an important consideration. The smaller it folds down, the easier it is to store. This applies across all the places you might put your folded bike: at home, at work, in your car boot or on public transport. In fact, some transport services set a specific folded size of the bikes they’ll allow on board. 

The biggest determiner of a folding bike’s size is its wheels. Brompton bikes come with small, nimble 16” wheels which makes for a very compact final folded size. Our popular C Line model measures 58.5cm x 56.5cm x 27cm when fully folded down.

Our G Line is the only bike we make with 20” wheels. The G Line is a little bit more rugged and the larger wheels are a choice to help you roll over bumps in the trail. When folded, its dimensions are 67cm x 41cm x 72cm.

The biggest single factor in the overall weight of your bike is the material with which the frame is made.

Steel frames
One of the most common materials used in folding bike frames is steel, known for its remarkable durability and ability to absorb shocks and vibrations, it provides a smooth ride. Steel frames are characterised by their stability, longevity, and robustness on the road. The weight, however, can be a drawback for those seeking a more lightweight folding bike option. 

Titanium frames
At the top end of the market, and taking inspiration from the aviation industry are folding bikes using a titanium frame. Titanium is a premium material known for its strength, lightness, and corrosion resistance. While coming at a higher cost, the exceptional ride quality, resilience, and longevity of a titanium folding bike frame often justifies the investment for dedicated cyclists. 

Aluminium frames
Aluminium is used by some folding bike brands to produce lighter weight frames, but there is a compromise, and tends to have a more limited lifespan compared to steel.

You can buy a Brompton bike made of steel or titanium. We try to give you the option to lighten the load by choosing lightweight materials for other components of the bike. And, because you can set up your Brompton your way, there are lots of things you can remove to cut down weight if that’s your highest priority. 

 

 

Performance & comfort

How you feel when riding your bike is super important. You want to be comfortable, enjoying every moment of the journey. If you don’t love it, you won’t want to keep riding… and there’s not much good having a bike you never ride.

Performance is another important factor. You want to feel like the energy you are putting through the pedals is being turned into efficient forward motion. Nobody is asking you to win the Tour de France on your Brompton – although there is a perfect Tour de France Brompton model for just that occasion! – but it’s still nice to feel like you’re gliding effortlessly through life and not trudging along.

Let’s look at some of the factors that influence comfort and performance.

Wheel size: does size really make a difference?

Folding bicycle wheel sizes can range from 16 inches up to a hefty 26 inches. Smaller wheels not only make the folding bike more compact, but also offer a distinct advantage when it comes to urban cycling. 

Nearly all Bromptons have 16” wheels.

The smaller wheels on a folding bike provide a quicker start and stop ability, making them particularly advantageous at traffic lights and bustling intersections. The smaller and lightweight wheels offer nimble handling; essential for navigating through crowded city streets. 

Folding bike gears: making life easy for yourself

Your folding bike’s gears determine how easy it is to ride on varied terrains. To ride comfortably uphill, you want higher (easier) gears. To ride quickly on the flat, you want lower (harder) gears. Having a broad range makes your bike more versatile.

You can go deeper into the different types of gearing systems we offer on our bikes (and their respective merits) in our guide to Brompton folding bike gears. 

For now, suffice it to say that you can buy a Brompton with 1, 2, 3, 4, 6, 8 and 12 speeds. That means there’s something for everyone, from urban riders in flat cities to those wishing to conquer huge mountain passes.

If you only plan to ride on the flat and for shorter distances, you can zip from A to B with a single-speed folding bike. Then you don’t have to worry about changing gears (or maintaining them). Single-speed bikes are often cheaper than bikes with multiple gears. 

If you live in a place with more varied terrain, with some flat bike lanes but also the occasional gentle hill, you will feel most comfortable with somewhere between three and six gears. 

If you live in a place where there are lots of steep hills, or if you’re planning on taking your folding bike on touring adventures or to climb big mountains, then we suggest opting for something with eight to 12 speeds. 

Riding position: comfort and confidence

Folding bikes tend to take a one-size fits many approach, with a single standard frame size offered for everyone. You can then fine-tune it to suit you personally. 

This personalisation is done by adjusting things like the seatpost and handlebars; taller people will set their seat higher, and so on. 

At Brompton, we offer three sizes of seatpost: Standard, Extended and Telescopic. The Telescopic is the ‘tallest’. Extended is in the middle. Standard is, you guessed it, the standard. 

Our handlebar offering is very similar, with Low, Mid and High options – each designed to give a different degree of ‘elevation’ of the handlebar. The higher your handlebar is, the more upright your riding position will feel. Upright is good for comfort, and for seeing what’s going on around you.

Smart choices: budget, build quality & test rides

Once you’ve figured out the size of wheels, and have a fair idea of how to get your bike to setup for your body, it’s time to find a bike you like.

Budget

How much does a folding bike cost? Anything from £250 up to £5,000. The wide variety in price reflects the different materials used to make them, the build quality of the bikes, and of course the before- and after-purchase experience customers get. 

When buying a folding bike, it’s important to set your budget and understand which bikes and features fit within it. 

Up to £500

This is the bottom end of the market. You may be able to find a decent second-hand model around this price, but generally you can expect lower build quality, cheap components and heavy materials.

Up to £1,000

For around £1,000 you can expect a decent quality build, albeit with heavier frame materials. Don’t expect any titanium here. You are likely to find a mixture of good and middling components. 

The super simple, super compact A Line comes in at £950, the most accessibly priced Brompton model. It uses a robust steel frame, finished with three-hub gears tuned for city riding.

Up to £2,000

This budget is something of a sweet spot, where you’ll find a lot of choice. The C Line, our most popular Brompton model, starts toward the lower end of this bracket – and can be modified to suit your preferences. The 12-speed version is the most premium C Line and it just fits in under the £2,000 mark. 

Over £2,000

This is where you find the most exciting frame materials and flashiest components. Think titanium frames and carbon fibre details. Our T Line models have a titanium frame, while you can also find P Line models – known for their low weight and sporty performance – between £2,000 and £3,000.  

Most high-quality folding electric bikes also sit above the £2,000 mark.

Build quality: folding bikes that are made to last

We pride ourselves on the quality of our bikes, and we believe that buying a Brompton works out better over time because they last. 

Despite being in business for 50 years, the engineering of a Brompton is largely unchanged. Because when you find a way that works, you stick with it.

The heart of a folding bike is its folding mechanism, and a big part of this is the hinges and hinge clamps. They may not sound flashy, but paying attention to quality when it comes to small parts like these is a core part of why Brompton has been so successful for half a century. 

Good quality hinge clamps are snug, strong and don’t rattle. 

Hinge clamps are also a part of the bike where it’s possible for manufacturers to skimp – to save a bit of money on the overall RRP of the bike. But this of course has knock-on effects later down the line, wearing out faster or failing entirely. 

Our frames are made in Britain, by skilled experts based in Sheffield and London. Naturally, as a British company we’re very proud of this. If you really want to get nerdy, each of our welders has a recognisable style so they can identify one another’s work. A true indicator of artisanship if we ever saw it!

We’re so confident in our frames that we offer a seven-year warranty on them, provided that you register your bike online. Without registering, it’s still a two-year warranty. We also offer a 28-day satisfaction guarantee.

After-sales care

It’s not enough just to sell you a bike, we want to make sure you get the most enjoyment out of every journey. When you invest in a Brompton, we provide the best customer service we can – to smooth out any teething troubles and keep you rolling. 

We also have Brompton partner shops around the world, so you can get your bike properly serviced by a mechanic who knows their way around the fold. 

And if you’d prefer, you can send the bike to us directly for a Premium Service. We’ll send you a cardboard shipping box to put your beleaguered bike in, you tell us when it’s ready for pickup and we will come and collect. It’ll be returned to you once it’s back to its beautiful best.

Folding bike guide: ready to make your choice?

Choosing the right folding bike is all about striking the balance between portability, performance and your personal needs. Whether you're navigating busy city streets, hopping between trains, or squeezing your bike into a tight hallway, we hope this folding bike guide has outlined everything you need to consider – from frame materials and wheel sizes to gears, ride feel, and budget.

We’ve shown how Brompton bikes fold quickly and cleanly, how they’re designed for comfort and agility, and how the build quality stands the test of time. We’ve broken down pricing, performance, and portability so you can make an informed decision with confidence.

Now you’re ready to embrace the freedom and flexibility of folding bike life, there’s only one thing left to do: Shop Brompton Bikes.