Why Brompton?

If you want an efficient and flexible urban bike, compact enough to fit in a smallest living space or under your office desk, portable enough to take on the train, or virtually any vacation, that never, ever needs to be locked outside, then you want a folding bike.


But, if you want

  • lightning-fast, super-easy folding & unfolding

  • the most compact, secure & portable package available

  • comfortable, efficient & dignified ride

  • unsurpassed for multi-modal commuting, travel & compact storage

  • thoughtful integration with well-designed accessories

  • engineered & hand-crafted in England

-- then you want a Brompton.

But wait! Which Brompton?!

Great question! Though only one frame design is available, the choice of steering, gears, saddles, tires, and other options makes choosing the right Brompton a pretty tough decision. And did we mention COLORS?!

Brompton Advantage

How It Works

Essential Brompton Buying Guide

Why Cosmic Bikes?

Because you will not find any shop in Chicago area with more experience setting up new Bromptons or servicing older ones. Our staff have helped hundreds of customers with their Brompton purchase, and we own Bromptons, love them, and ride the heck out of them. We give you:

  1. All the advantages of buying your Brompton locally.

  2. Our expert assembly and 12-Point Checklist for every Brompton we sell

  3. FREE delivery & setup in the Chicago area with your new Brompton purchase.

  4. If you do not have a local dealer and are shopping with us from out of town, we will fully tune, adjust and test your Brompton prior to shipping anywhere within contiguous US.

Buying a Brompton

Since buying a Brompton is a considerable investment, many people prefer to customize, and set up their Brompton exactly the way they want (see below). Your custom Brompton will arrive at Cosmic Bikes in about eight weeks*, and we will inspect, assemble and tune it up for you as part of your purchase. Or you can choose from a selection of stock and pre-configured Bromptons and ride one sooner.

custom brompton

You can use the interactive BROMPTON BUILDER on Brompton’s official site to configure the perfect bike and calculate the price.

Once you have it exactly the way you want it, copy the Configuration Reference (CR#) generated, and contact us at 773-930-4076 to complete the order for you.

You can use the order form on the right to make a deposit. Enter your CR# and order your custom bike online.

custom order deposit


After you click ADD TO CART, you will be prompted to enter the Configuration Reference # for your custom Brompton generated by the builder tool. You can then proceed to checkout, to place the deposit on your order. We will verify and place the order with Brompton for you within one business day. The total amount due will be shown when you configure your bike. The remaining balance, plus any applicable taxes, will be due upon delivery, which takes approximately 8 weeks.

Add To Cart

stock and pre-configured bromptons

If you'd rather not wait that long, and are less particular about specific colors and options, we offer a selection of Bromptons available immediately from our showroom, or within a few days from a US warehouse.

There’s no difference in quality or manufacturing process of the pre-configured Bromptons. They simply represent some of the most popular configurations and colors and are available within about a week.

* The eight week timetable is usually quite reliable, with one exception: US Customs. Occasionally, and without warning, shipments can be held up for several days and up to a few weeks. This is extremely rare, but as neither we nor Brompton have any control over this process, we ask for your patience should this situation arise.