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Brompton CHPT3 – Edition 4


Available on back-order

SKU: 20649 Category:


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.
Order Quantity
Due to popular demand – we can only allow 1 bike per order
Dispatch Time
Due to high demand dispatch may be up to 10 working days
Main Frame
Precision drawn heat-treated steel tubing with hand brazing and selected auto-brazed joints
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
Weight (Approx.)
Folded Size
645mm (H) x 585mm (W) x 270mm (D) (25.3” x 23” x 10.6”)
FizikTerra Argo Saddle – A short nose saddle with a ride-compliant carbon-reinforced nylon shell and S-Alloy rails
The saddle absorbs road chatter and vibrations, delivering the comfort needed for long distance riding
Brompton Extended Chromoly steel tube – gloss black. Suitable for maximum inside leg 35″/89cm
Ergon GE1 Evo Slim – A premium ergonomic, rider-oriented grip with more comfort, precision and performance
High-shine Gloss Winter Sky and textured Concrete Grey with Fire Red and Aqua Teal accents
Brompton Folding left hand and non-folding right-hand pedals
Rear Wheel
Superlight 4 speed rear wheel
Lightweight rim, double-butted spokes and aluminium hub body with sealed bearings
  • Newly developed 4 speed freehub body and hex key axle
Hinge Clamps
Machined aluminium hinge clamp levers and plates anodised matt black finish
Tubolito lightweight inner tubes
Schwalbe One Tanwall – Developed specifically for the CHPT3 bike with class leading grip, weight and rolling speed
Bottom Bracket
Square taper bottom bracket
6061 forged aluminium crank with 50T chainring and integrated chainguard
Patent-pending direct mount 4 speed derailleur
Brompton 4 speed rear wheel​
11-13-15-18 Tooth
Brompton 4 speed drivetrain, 163% range
Brompton 4 speed trigger shifter
Hollow pin Superlight Advance Chain
Chain Tensioner
Advance chain tensioner with replaceable hanger mounting
Dual Pivot Calipers
Superlight Headset
Frame Pouch Bag
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
Perfect for storing a spare innertube (1x included) plus a multi-tool and tyre levers for essential road side repairs
Simple flap closure to the main compartment and secures via a Velcrostrap. Externally it features a grippy printed surface and Brompton logo; both in CHPT3 Fire Red.
It’s made from a highly durable Hypalon material in a waterproof welded construction that will repel whatever the elements can throw at it



The unique Brompton folding bike was designed and built in London in 1975 by Andrew Ritchie in his flat in South Kensington opposite the Brompton Oratory. Still made in London today, Brompton is making over 50,000 bikes per year and is the UK’s largest bike manufacturer.
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