COSMIC BIKES BROMPTON GUIDE

BROMPTON LINES & MODELS

The Biggest change yet!

No question, the introduction of the G-Line in late 2024 is the biggest change in Brompton’s history.

Breaking with the long tradition of 16” wheels, adding disc brakes and introducing three sizes for riders of different heights are all radical departures from the time-tested classic (and incredibly versatile) Brompton design.

In this section of the Brompton guide, we’ll help you make sense of the available options, and chose the one that is right for you.

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What Changes and What Stays the Same

What stays:

  1. Brompton Lines A, C, P and T all feature the iconic Brompton design, 16” wheel size, foldability, functionality and utility. Whether you get the budget-friendly A-Line, or top of the line T-Line, the fold and the size of the folded package will be virtually the same (though not the weight).

  2. Across those four lines, customers can still choose form the analogous handlebar styles, similar gearing options and accessories as before, but the options will be grouped by function rather than by component choice.

What goes:

  1. Customizations such as choosing color combinations and personalizing your Brompton from the factory have been eliminates since 2022.

  2. The 3 x 2 gearing combination utilizing the Sturmey Archer 3-speed internally-geared hub in combination with a 2-speed rear sprocket it being replaced across all the lines.

What’s new:

  1. Across Brompton Lines C, P and T, the new 3 x 4 gearing configuration is being phased in. This combines the 3-speed hub with a 4-speed sprocket and a proprietary derailleur. Bikes will be available in a 4-speed Urban, or 12-speed Explore configurations.

  2. The G-Line makes a huge departure from the classic Brompton, and does not share any of the components with its predecessors.

G-Line

Like any Brompton, it transforms instantly from a compact folded package into performance personal transportation.

Like its 16” wheel predecessors, the G-Line features Brompton’s trademark three-part fold, making it the most compactly folding 20” bike available. However, the larger and wider wheels and the frame made to accommodate them make for a larger package than the classic Brompton.

Best for: and ideal portable option for adventures, touring and explorations off the beaten path.

  • 20” wheels with Schwalbe tires offer superior traction and stability over mixed terrain

  • TRP Disc brakes

  • 8-speed Alfine gear hub

  • Three frame sizes to fit a wide range of riders up to 6’6”

  • Racks and mudguards included

  • Compatible with a range of accessories including luggage, tools, lighting, plus phone and water mounts.

  • Priced from $3300 by PRE-ORDER only.

C-LINE

This is the meat and potatoes of the Brompton line-up. The Core Line that you are likely already familiar with.

Currently, instead of emphasizing component selection, the options are grouped by function. At this time, the C-Line is still spec’ed with the 3 x 2 gearing system.

  • Urban (2-speed). Best for: zipping around the city

    With 2 gears, the C Line Urban is lighter to ride and carry than all other C Line models. And with one gear trigger, it’s simple to use. If your commute involves going up and down stairs, walking along platforms and getting in and out of elevators or Ubers, you’ll appreciate the benefits of this bike’s lower weight

    • Handlebar: choice of Low Mid or High

    • Mudguards: Included

    • Lighting: Optional

    • Rack: Optional

  • Explore (6-speed). Best for: travel, adventures and explorations within and outside the city.

    You can load this 6-speed all-steel workhorse with luggage and a rack for all-weather commuting or touring, then go explore. This full-featured Brompton is equally at home in a big city or on an open road. Some owners have ridden these around the world.

    • Handlebar: choice of Low Mid or High

    • Mudguards: Included

    • Lighting: Optional

    • Rack: Optional

  • C-Line Bikes are priced from $1550-$1950

All C-Line Bromptons allow for a choice of standard colors, plus limited edition colors introduced throughout the year.

P-LINE

These models feature the premium Brompton frames with titanium forks and rear triangles:

  • The titanium rear frame and forks make the bike considerably lightercthan the all-steel equivalent, without compromising strength. The redesigned suspension block maximizes responsiveness for improved control and handling performance. Titanium is naturally shock-absorbing, so you can feel the difference in the ride.

  • Enhanced portability. The new dual-locking seat post system has two positions, fully down for storing or halfway up for rolling. The larger and lighter rolling wheels, make it easy to maneuver through tight and busy spaces.

  • Urban (4-speed). Best for: perfect lightweight urban commuter.

    • Weight: 21.8lbs

    • Handlebar: choice of Low Mid or High

    • Mudguards: Included

    • Lighting: Optional

    • Rack: compatible with optional Advance Rack

  • Explore (12-speed). Best for: travel or hilly commutes.

    • Weight: 23.5lbs

    • Handlebar: choice of Low Mid or High

    • Mudguards: Included

    • Lighting: Optional

    • Rack: compatible with optional Advance Rack

  • P-Line bikes are priced from $2950-$3400

T-LINE

The lightest and most compactly folding bike available, period. Full titanium frame enhanced with premium carbon components.

Best for: Multimodal and international travel, where low weight, lightning-fast fold and ultimate portability are crucial.

  • 1-speed: 16.4 lbs for the true minimalist; $5225

  • 4-speed: 17.5 lbs personal transportation for those who want the best; $5500

  • 12-speed: 19.4 lbs for the minimalist globetrotter; $5850

  • All available with low and mid handlebars.

Priced from $5225-$5500

A-LINE

This is the most budget-friendly Brompton. It shares the frame quality and folding mechanism and 3-speed drivetrain of the standard core Brompton, but utilizes some older-style components (shifter, handlebar, non-folding pedals), and does not offer options of handlebar, gearing or colors. A-Line bikes are available on a limited basis throughout the year.

Best for: Students and those who want all the benefits of a Brompton at a budget-friendly prices.

  • A robust all-steel frame handmade in London.

  • 3-gears tuned for city riding.

  • Handlebar: Mid

  • Colors: White Mainframe, Black Extremities

  • Pedals: non-folding

  • Mudguards: may be added

  • Rack: may be added

  • Lighting: may be added

  • Priced from $1150

BROMPTON ELECTRIC

E-ASSIST option is available on C-Line (priced from $3950) or P-Line (priced from $4750) in similar configurations as their non-electric counterparts.

A lightweight electric system with a 45 mile range enhances the usability of a Brompton in the city by eliminating some of the more punishing aspects of cycling: longer distances, headwinds and climbs.

Electric Bromptons are ideally suited to commuting and recreational use, and car and rail travel. Because of inconsistent international and airline regulations, they are less suited to global travel than their pedal-powered conterparts.