P-Line S4E Winter Sky/Concrete Grey, Brompton x CHPT 3


P-Line S4E Winter Sky/Concrete Grey, Brompton x CHPT 3


Brompton x CHPT3 (4th Edition)

Turning a new page in the Brompton and CHPT3 story, the latest collaboration brings a fresh dynamic to a proven partnership. One founded on fun, practicality, and high performance.Drawing on our previous three collaborations with David Millar of CHPT3, we turn to page 4, and the horizon broadens. A bike that originated as a city commuter and became a daily workhorse for David, a former pro-cyclist, is now embraced by a community who see beyond simply departing from point A and arriving at point B.The Brompton x CHPT3 could be called an unlimited edition bike. It draws on the need for core Brompton practicality yet fulfils the desire for performance, causing you to stray from the shortest distance between two points. It’s everything you need and nothing that impedes your progress. Not a folding bike you could ride anywhere, but rather a bike that you will ride everywhere that also folds.


Now for a limited time get $200 off when you buy IN STORE ONLY.


Made for Speed

Handbuilt titanium and steel frame. All the practicality of a Brompton in a lightweight and performance oriented form. More than 3.3lbs lighter than the original bike.

Fi’zi:k Terra Argo X5 Saddle

We chose this gravel-specific saddle for the superb vibration absorption, and the short nose. This gives you a stable, planted position. You can shift further forward too – the ergonomic design minimises pressure on any sensitive parts. Cleverly thought-out drainage channels make it brilliant for wet-weather riding.

Superlight, compact gearing system

The Brompton 4-speed system* for rapid urban acceleration and nimble climbing ability. With a 60-gram derailleur, meticulously engineered to fit inside the narrow fold.

A fast and light wheelset

Designed and tested to stand up to daily use in the city, in all weathers. On superb tan-walled Schwalbe One tyres for optimal grip and maximum style. With weight-saving Tubilito inner tubes.

Brompton x CHPT3 Frame Pouch Bag

Your CHPT3 comes with a limited-edition Frame Pouch Bag. It’s inspired by how the community use their Brompton x CHPT3 bikes – moving fast around the city, racing, heading out on long weekend rides. It’s perfectly sized for a spare tube and tools. Just like the bike, it’s minimalist, practical and brilliantly durable. In abrasion resistant Hypalon fabric with a welded, waterproof construction.
Brompton x CHPT3 4th Edition
A minimalist Brompton P Line, packed with high-performance details. We selected proven performance modifications such as titanium forks and rear triangle, assembled for speed without loss of comfort. The gearing is chosen to cover all bases, from quick sprints and sustained speed to steep climbs. All contact points between you and the bike, and the bike and the road deliver lightness, performance and comfort. We’ve even sourced light weight inner tubes, which means you can focus on avoiding the shortest route to reach your destination.


-4 Speed
-20.9 Lbs
-Titanium and Steel

20.9 Lbs


4 Speed (Urban)


Titanium and Steel

Folded Size

25.3′ H’ x 23” W x 10.6” D

Main Frame

Precision drawn heat-treated steel tubing with hand brazing and selected auto-brazed joints


High-shine Gloss Winter Sky and textured Concrete Gray with Fire Red and Aqua Teal accents

Rear Frame

Superlight Advance rear frame made from Titanium with a replaceable hanger, redesigned suspension block and new 54mm roller wheels


Superlight Titanium fork with a threaded headset


Ergon GE1 Evo Slim – A premium ergonomic, rider-oriented grip with more comfort, precision and performance


Extended, Black (35″)


Fizik Terra Argo


Machined aluminium seat clamp and rear frame clip in anodised matt black finish

Hinge Clamps

Machined aluminium hinge clamp levers and plates anodised matt black finish


Brompton Folding left hand and non-folding right-hand pedals


Brompton 4 speed drivetrain, 163% range

Number of gears

4 Speed – Urban


Advance chain tensioner with replaceable hanger mounting

Bottom Bracket

Square taper bottom bracket


Superlight headset


Brompton 4 speed trigger shifter


11-13-15-18 Tooth


Patent-pending direct mount 4 speed derailleur

Rear Wheel

Lightweight rim, double-butted spokes and aluminium hub body with sealed bearings, newly developed 4 speed freehub body and hex key axle

Front Wheel

Superlight 4 speed rear wheel


Schwalbe One Tanwall – Developed specifically for the CHPT3 bike with class leading grip, weight and rolling speed


Tubolito lightweight inner tubes


Not included


Not included


Not included


Not included


Dual Pivot Calipers

Front Carrier

Not included


Each bike comes with a limited-edition CHPT3 x Brompton Frame Pouch Bag, The frame pouch bag has been designed to fit securely inside the triangle on the bikes’ mainframe.


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