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Brompton Buying Guide

Brompton Buying Guide

Posted on 09 March 2017

Thinking of buying a Brompton or custom Brompton? We're here to help. As Canada's oldest Brompton dealer we've been doing this for over a decade and there's not a question we haven't answered. And, while all the Bromptons you see on our website and in our store represent our own "Curbside" custom Brompton (you can read about that here) it never hurts to arrive at one of these bikes by first asking whether or not you should customize. Still not sure why Brompton is the best? Then click here!

Here, we will walk you through choosing the right handlebar, gearing, fenders & racks, tires, frame, lighting, and the other stuff. 



Whether or not you are buying custom or off of our website/store you always begin with the handlebar. Choosing a handlebar has to do with (a) the way nature made you (your height), and (b) your preferred riding position: upright or sporty. Unless you're getting the P-Bar - which is a multi-position bar - it looks like this as a general rule:







5'0" - 5'4"

80% Upright


100% Upright

Too Upright!


5'5" - 5'9"

100% Sporty

80% Upright

100% Upright


5'10" - 6'2"* Too Sporty!

100% Sporty

80% Upright


 *If you're taller than 6'0" we recommend the telescopic seatpost for added height



Gearing isn't a technical question, it's a question around how you want to use your Brompton. If you use the bike for short-distance flat rides and want something lightweight, a one-speed or two-speed is recommended. If you do the same with a couple of hills, the three-speed is best.

But, we find that even if most of our customers use their Brompton for one thing - like a daily commute - they will also love it so much that they'll take it travelling. So, buy a Brompton not just around what it can do for you practically, but what it can do recreationally too. That's why we build all of our bikes with Bromptons wide six-speed hub.  


TERRAIN Flat Flat Slight Hills Lots of Hills
DISTANCE Short Mid-Short Mid Range All Range
WEIGHT Adds 0lbs Adds .5lbs Adds 1.65lbs Adds 2lbs
COST Adds $0 Adds $105* Adds $195** Adds $320***

 *From the price of a 1sp model




Brompton's a company that likes you to think twice about things, and while they have nothing again using fenders or not, they do have pretty strong opinions about the rear rack. 

Brompton's an engineering company, which means they like things that click together really nicely, and a rack holding stuff down with bungee cords probably keeps them awake at night. Instead, Brompton recommends you take the money you would spend on a rack and put it towards a front-mounted bag. The front-mounted bag does not steer with the bike, and that means it doesn't affect handling anymore than having a rack would. Plus, you can fold the bike and literally use the bike as a shopping cart (see below). Cool, right? You can't do that with the rack. In fact, if you buy a rack you always need to remove your stuff off the rack before you fold the bike. That's not the case if you use the front bags. 

So, why would you use a rack? Because you already have a front bag but need even more space. Some of us here at Curbside use racks on our Bromptons because we need a place to put the roll-up soft-bag that we for transporting our Brompton by air. Others have done loaded touring on their Brompton and need space for tents, etc. Kind of like this:

 Oh, and back to gearing. If you are touring with this kind of load we recommend going down a size in the front chainring, from a 50 Tooth to a 46 Tooth (Brompton calls this a -12% reduction). That helps you gear down for all that extra stuff you're carrying. 


No Nothing



Fenders + Rack

Will you stay dry? Nope Yep Yep
Can you fold the bike with luggage on? N/A Yes No
Weight Added 0lb .8lb 1.7lb
Cost Added $0 $105 $225




Here in Toronto they don't clean the streets all that often here. That's why we spec all of our floor models with Schwalbe Marathon tires. They can handle all of the glass, staples, and other sharp objects that this city seems to throw at tires. They add some weight, but for all intensive purposes it's good weight. If you're outside of Toronto and want something a bit lighter then go with the Brompton tire. 

On the flip side, let's say all you care about is speed - because Brompton is the kind of bike people race. All of that high acceleration and maneuverability a Brompton naturally has is amplified when you put a narrow, high-pressure tire on. 

So, if you don't mind fixing the odd puncture then we recommend the Schwalbe Kojak. And, if you put the Kojak tire on we also recommend changing front chainring to a 54 Tooth (Brompton calls this +8% gearing), since you'll need higher gearing to match the higher speed tires. 

Brompton Tire Kojak Tire Marathon Tire
Puncture Resistance OK Low Very High
Weight Added
- 0.5lb
Efficiency/Speed Good Fast OK
Cost Added $0 $40 $40





The main-frame of a Brompton is always made of brazed steel. That makes the bike strong and it keeps the engineering tolerances dialled in perfectly. But, for those searching for a lighter bike and a more comfortable bike there is the extra-light package. But, be warned, it ain't cheap.  

The Titanium extra-light package costs and saves you 1.7lbs and costs $1125 extra. That's a lot, but it has its place. If you are lifting the bike a lot (and not just off the ground but up into things) the lighter weight is certainly noticeable. But the greatest virtue of titanium is its natural resilience. If you're doing longer rides - especially tours - we suggest the titanium. It absorbs a ton of shock that would be otherwise delivered to your wrists, arms, neck and lower back. That's the real reason for going extra light, the weight savings are just a bonus.

Mmmmmm. Titanium.... 



Anyone who has shopped at Curbside knows that we can dork out when it comes to lighting. We'd like to think Brompton is pretty dorky about lighting too. And from one group of dorks to another, we can say Brompton has great taste in lighting. 

Ok, so if you just need some flashing lights that keep you safe (which is fine) don't bother reading on. We are interested here in lights that are highly visible to drivers and cast a beam so you can see where you're going. These lights can be divided into battery and dynamo. Each have their pro and con. 

A dynamo uses a special front hub that produces electricity that powers both the front and rear light. The great thing about this is that you get a very powerful beam and never need to replace or recharge batteries. Brompton uses German-made Busch & Muller lights that all feature built-in capacitors, which means when you hit a red light, both front and rear lights continue to run on stored charge. They're pretty neat. 

However, unless you want to spend a ton of money you are adding more weight and more friction to the bike with a dynamo. Of course, Brompton gives you the option to spend a load of money, so if you want low friction, light weight and a beam strength to match that of a motorcycle they offer the Schmidt-SON lighting system that turns night into day.  

If you want a powerful beam and are OK with charging the lights every other night then Brompton has exciting news. In late 2016 Brompton worked with Cateye in Japan to produce a very bright (and very light) 300 Lumen light that tucks just underneath the Front Carrier Block. The cost is reasonable and its USB chargeable. 


Cateye USB

Shimano Dynamo

Schmidt-SON Dynamo

Is it Bright? It's a-ok It's pretty good Um, wow!
Weight added .3lbs .9lbs .5lbs
Friction None Medium Almost none
Cost Added

 *From a Brompton with no lights 




The angels lie in the details, so here are some other considerations. 

1) Seatpost. If you're over 6'0" (as noted above), we recommend the telescopic seatpost. It adds 0.6lbs and $80 but it lets you dial in the perfect height. It also lets you drop the seat as low as the regular seatpost - which means the bike packs into the soft-case or B&W hard-case without having to remove the seat. If that's less of a concern then Brompton does offer an extended seatpost for no charge. This will poke out of the frame when folded (which drives us a little crazy) but it costs nada. 

2. Saddles. As a rule, the more upright you are the wider your saddle should be. Thus, if you want a 100% upright bike (see handlebar, above) then we recommend a wider saddle. If you want a 100% sporty bike then we recommend a narrow saddle. If you're 80% upright then its really your call. 

Since Brompton is British there's little surprise they endorse Brooks saddles as an option. Of course, we heartily agree. Comfort is based on body shape, not cushiness, and a Brooks saddle molds to your shape, constantly getting better with age. If you order a Brompton with a Brooks you also save a ton of money. The saddle they add costs $249 at Curbside but only $125 if you order the bike custom. Not bad!

3. Suspension. According to Brompton, if you weigh over 170lb you should get the firm suspension. This, however, is a matter of preference and we suspect the British might have softer butts than us hardy Canadians. We recommend the firm suspension for anyone 150lbs, unless you like a bouncy ride. Your call. We always stock a ton of either in case you change your mind later. 

Want to see the Bromptons? Click here!


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