Custom Modifications

• • •

Here at Perennial Cycle, Brompton Folding Bicycles are a house favorite. Despite the adage that says there is no such thing as a bike that 'does it all', we feel that the Brompton comes about as close as any bicycle.

The main two reasons Brompton has earned this status at our shop is their attention to detail and the endless ways in which a Brompton can be personalized to fit the needs of their riders. This is why we are excited to talk about these upgrades from Brompfication, along with the main reason we use them as upgrades ourselves.

Brompfication Titanium Seat Post

This addition makes sense for Brompton because it provides additional anti-shock qualities beyond that of Aluminum or Steel.

We find that this is an excellent solution to reduce 200g of additional weight off your Brompton. This is a big upgrade for your Brompton because it is a bike that is designed to be lifted and transported by the user on a regular basis. The pay off becomes cumulative!

Brompfication Hinge Clamp Set

This high quality part is made from Titanium and Aluminum. Not only do these clamps add a big ol' splash of bling to your bike, they are a serious quality of life upgrade for Brompton users as well.

These are cleverly machined in such a way that the Hinge Clamp Plate is always aligned correctly to the frame. This saves fiddling and time while folding your Brompton! Awesome!

Brompfication Seat Clamp Quick Release

The simple and clean design is reason enough to gift yourself with this little gem, but if that is not enough, there is also a quality of life factor.

It has been cleverly designed to hold its position on the bike without rotating. You'll thank your self when you see how smooth and simple it makes adjusting the seat post. It is not just candy for the eye!

Brompfication M10 Titanium Rear Axle Nuts

What?!? Are you nuts?

Nope, we just love Titanium on our Bromptons! This last piece may be just for bragging rights, but there are real-world reasons we use these in-shop as well.

Perennial Cycle is located in Minneapolis, MN. Winters here are hard on bikes and we like to install parts that will hold up to the demands of cycling in that salty slush. You'll even save a few grams over the stock ones.

In 2013 we set a goal of adding all of our in-stock Brompton folding bikes to our website. Once they'd been added, we set a second goal: to keep the listings accurate as 1 bike is sold and another arrives. All that means that today, you can go to PerennialCycle.com and browse our in-stock Brompton selection knowing that the bikes you see are bikes we have ready for in-store pick-up or shipping to your door.

We've sorted our Brompton folding bikes models by handlebar type, so you can shop for an S-Type, M-Type, or H-Type with the right gearing for your needs and the color of your dreams. You'll also see a special section for our in-stock Ti Brompton Superlights. If you're interested in a P-Type handlebar or don't see the bike you're looking for available, call us at 612-827-8000 and we'll be happy to help you with a B-Spoke order.

As you browse through each handlebar type, you'll see a variety of different combinations of gearing and color options. From the short description for each bike you can gather quite a bit of information. As an example, a listing for an M2L in Black and Turkish Green looks like this: "M2L [Black & Turkish Green]." M is of course the handlebar type, 2 tells us it's a 2-speed, and L indicates the bike has mudguards but no rack. Black, listed first is the color of the bike's main frame. The bikes extremities are Turkish Green, the second color indicated. For a listing with only one color mentioned, the main frame and the extremities are the same color.

Clicking on the listing for an individual bike, it's possible to see more details about the bike's gearing. It might say "standard," or "12% reduced." For single speeds and 2-speeds, you'll always see "standard," as we order all of our 1- and 2-speed bikes this way. For 3-speeds, you'll see a mix of standard and lowered gearing. In the case of 6-speeds, you'll see mostly lowered gearing and a handful of bikes with standard gearing. After riding Brompton folding bikes and helping customers through hundreds of test-rides, we've come to see that -12% lowered gearing is the ideal set-up on the 6-speed for the majority of riders. As of 2013, we began ordering many of our 3-speeds with the same idea in mind. Prior to 2014, lowered (or reduced) and raised gearing incurred an extra charge. Fortunately, that's no longer the case. Now you can choose the right gearing ratio for your Brompton without worrying about an added expense.

What's the difference between lowered and standard gearing? All Brompton 6-speeds have a Brompton Wide Range (BWR) Sturmey Archer hub on the rear wheel and all come set up with the same rear sprocket set. The physical difference between bikes with standard and lowered gearing is in the front chainring attached to the crank. A 6-speed with standard gearing has a 50-tooth chainring, while a 6-speed with lowered gearing has a 44-tooth chainring. Practically speaking, that means the every gear on the bike with a 44T ring requires less effort on your part when pedaling. That means you'll climb hills more easily on a bike with reduced gearing. And, the average rider will be more likely to use the full-range (even the hardest gear) on a 6-speed bike with reduced gearing. If you're one for crunching gear ratios, you can find Brompton's chart here.

Once you've decided on a particular bike, here are the remaining details to keep in mind:

Seat Height

You can choose from one of three seatposts for your Brompton. For an inseam over 84cm/33", we suggest an extended or telescopic seatpost. The latter is best for an inseam over 90cm/35", or for taller riders wishing to minimize the height of the folded bike.

Saddle

Several options are available to select within your bike's listing, including the brightly colored Brompton Rail Saddles. If you'd like to order a saddle other than one listed here, simply add it to your shopping cart separately. If you select an alternative saddle (e.g. a Brooks saddle other than the B17 Special in Antique Brown), you may note in the comments section with your order whether or not you'd like to have the standard black Brompton Rail Saddle as well. If you choose a Brooks saddle, we recommend a rain cover for all-weather riders and the Brooks Maintenance kit or a stand-alone tin of Proofide.

Tires

We order all of our Brompton folding bikes with the company's standard Kevlar tire. It's light-weight and offers good flat protection. For an upgrade fee, we are able to send your Brompton with 1) Schwalbe Marathon tires 2) Schwalbe Marathon Plus tires 3) standard Schwalbe Kojak tires or 4) folding Schwalbe Kojak tires. Please call us at 612-827-8000 or make a note in the comments section with your order if you'd prefer we swap out the standard Kevlar tires for one of these upgrades.

Rear Suspension

Two levels of resistance are available, to suit body weight and riding style. We recommend Firm suspension for most riders, and anyone weighing over 80kg (175+ lbs) and those who value responsiveness above comfort. If you prefer a softer ride, are a lighter person or if you ride and pedal particularly smoothly, you may opt for Standard suspension.

Lighting

We order a percentage of our Brompton folding bikes with Shimano Hub Dynamos and the accompanying front and rear lights each year. The majority of our bikes arrive to our door with reflectors only in front and back. We are, however, happy to add a dynamo lighting system to any in-stock bike. We stock both the Shimano and the SON hub systems and a variety of dynamo lights. Note that pricing here may vary from the B-Spoke order form as factory-installed systems are offered at a lower price than the sum of the parts in our store. We do offer free labor when installing dynamo lighting or battery lights on any new Brompton. Still, for the greatest savings on a dynamo system with Brompton's stock headlights and taillights, it's best to B-spoke order your Brompton.

If you're interested in a headlight other than the B&M Lyt (standard for the Shimano hub) or the B&M Cyo (standard for the SON hub), or a taillight other than the standard Brompton dynamo rear light, you may either place your order by phone or choose "reflectors only" and add the necessary parts to your order one-by-one. You'll need to add a front dynamo wheel (Shimano or SON) and a Hub Dynamo/LED wiring loom to your order along with the lights of your choice and a Hub Dynamo/LED wire form bracket.

Should you be shopping for more powerful battery lighting in lieu of a dynamo system, you may consider pairing the Brompton rear battery light with a rechargeable front light from Light and Motion's Urban series. Simply choose "reflectors only" and add the lights of your choice to your cart separately. We'll install the Brompton rear battery light for you and include the headlight in the box with your Brompton.

Front Luggage & Accessories

Choose a front carrier block alone or opt for a bag set (a front carrier block + the bag of your choice). You will see a few options in our list not included on Brompton's B-Spoke order form. Learn more about the Carradice City Folder here. Or, view of the Carradice Stockport here.

If there are other parts and accessories (e.g. a rear rack or non-standard pedals) you'd like to add to your order, simply add them to your cart as you would with any other order at PerennialCycle.com.

Shipping

Our standard shipping charge on Brompton folding bikes is $40 per bike. Choose "folding bicycle" under other options at checkout. Check our homepage or sign up for our newsletter for information about shipping promotions throughout the year.

We'll install parts like the Front Carrier Block or Eazy Wheels for your convenience prior to shipping and include items such a Carradice Saddle Bag inside the box with your bike as space allows. For larger accessories like Brompton's B Bag, we may package your bike and the chosen accessories in separate boxes under one tracking number. If you're ordering a Brompton Travel Suitcase, we'll ship your bike inside the case in one box.

We welcome your questions by phone or email. If you're in the neighborhood, come on in for a test-ride any time.

The RANS Stratus XP has been a popular bike in the shop for years. With its' supple long wheelbase, low pedal height and dual 26" wheels the XP makes a great every day ride as well as cross country touring bike. As a well designed bike out of the box, it's definitely a fine candidate for customizing. We've done a number of super upgrades over the years, but this recent project was particularly sweet!

Year after year, Steve gets many, many miles on his bikes. He does a lot of both commuting and touring. After a couple of great years on the Stratus XP he realized that this bike fit his needs very well and is worth investing in some sweet upgrades to make it even better.

For starters, he had us add an impressive Rohloff rear hub with it's 14 internal gears to simplify the drivetrain and eliminate gear overlap. A 48-tooth chainring with a 16-tooth rear cog give it a whopping 21 to 114 gear-inch range. The front chainguard is his original 52-tooth chainring with the teeth machined off. Cool. The chaintubes are made from PTFE tubing. He also upgraded his brakes to Avid BB-7. We were all impressed by the project and took some photos to share with you: