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Discover the thrill of city exploration with the P Line Urban from Brompton a high performance bike that glides effortlessly through city streets. Lightweight, foldable, and designed for speed, it's the perfect ride for open-minded adventurers ready to conquer new horizons.
Discover the thrill of city exploration with the P Line Urban from Brompton a high performance bike that glides effortlessly through city streets. Lightweight, foldable, and designed for speed, it's the perfect ride for open-minded adventurers ready to conquer new horizons.

Brompton P Line 4 speed 2023 Folding Bike in Grey


With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!


With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined


Of course we hope you are delighted with your new purchase, however you have a right to cancel your order for any item purchased through our website with or without reason, under the distance selling regulations for refund. If you are unhappy with your purchase we accept unused returns for replacement or refund within 30 days.

Our returns address is:
Infinity Cycles
Unit B Littleburn Business Centre,
Mill Road,
Langley Moor,
DH7 8ET.
Faulty returns must be sent back for inspection before a refund will be issued. If the product is found to have a defect you will be offered a refund or exchange (if available). Refunds will ONLY be given for damaged goods where no replacement product can be supplied. Damage due to normal wear and tear, misuse, alteration to the product, or negligence is not covered under our returns policy and refund will not be given.
Returned goods must be adequately sealed in original packaging. On returning items the original packaging should also be returned undamaged and as received. This must be wrapped in an extra outer layer. Failure to do so could result in only a partial refund being issued.
Please ensure you ask for a certificate of posting as proof you have sent the package. Royal Mail do charge for issuing a certificate. If you return an item without proof of postage and it is lost in transit we reserve the right not to issue a refund. You are responsible for the item until we receive it therefore we suggest you return the parcel using Royal Mail Recorded (Signed For) Delivery or similar. We will not refund the postage paid by the customer on unwanted returned items or sizing issues (so please contact us regarding sizing prior to ordering if you are unsure).
Infinity Cycles Durham | CUBE Bike Store Durham | The North East's Largest Independant Bike Shop & Cycle Repair Workshop

Brompton P Line 4 speed 2023 Folding Bike in Grey




Experience the thrill of city exploration with the P Line Urban from Brompton. This bike is the ultimate companion for avid adventurers seeking to effortlessly glide through culture-filled streets. Designed to strike a perfect balance between refinement and power, this high-performance model elevates your riding experience to new heights.

With its lightweight frame, 700 grams lighter than traditional all-steel equivalents, transportation becomes a breeze, and agile riding becomes second nature. The P Line Urban guarantees a fun and smooth city exploration with features like a responsive suspension block, shock-absorbing titanium frame, and a 4-speed gearing system that ensures comfort at any speed. The intelligently engineered gears allow you to confidently maneuver around tight corners and through traffic with ease.

Not only does this bike provide a comfortable ride, but it also folds away into a compact and lightweight design, making it the perfect companion for experiencing every aspect of urban life. Enhanced usability is further emphasized by features like the easy-to-handle frame and front carrier block.

The P Line Urban's elegant design, a signature of Brompton, beautifully complements its powerful performance. Whether you're speeding through the city or navigating built-up areas, this bike exemplifies the harmony of strength and finesse.

Key Features:

  • 20% lighter than all-steel equivalents, delivering exceptional performance both indoors and outdoors.
  • Folds in just 20 seconds, including the pedal, transforming into a small, locked package with expert engineering.
  • Made for speed with proven performance modifications, including a titanium fork and rear triangle, along with best-in-class components.
  • Equipped with a superlight 4-speed gearing system fine-tuned for seamless city riding.
  • Features Continental Contact Urban tires with Kevlar bead, providing a 60g weight saving compared to steel bead versions, along with superior grip and control in wet or dry conditions.
  • Backed by a 7-year frame warranty, handbuilt and quality assured in Brompton's London Factory, ensuring a durable and reliable ride for years to come.
  • M Bars
Technical Information
  • Frame - Precision drawn heat-treated steel tubing with hand brazing and a Superlight Advance rear frame made from Titanium with a replaceable hanger
  • Fork - Titanium fork with a threaded headset
  • Number of Gears - Brompton 4 speed drivetrain, 163% range
  • Chainset - 6061 forged aluminium crank with 50T chainring and integrated chainguard
  • Cassette - 11-13-15-18 Tooth
  • Rear Derailleur - Patent-pending direct mount 4 speed derailleur
  • Pedals - Brompton Folding left hand and non-folding right-hand pedals
  • Front Hub - Superlight front wheel - Lightweight, double wall rim, double-butted spokes and aluminium hub body
  • Rear Hub - Double wall rim, double-butted spokes and aluminium hub body
  • Front Tyre - Continental Contact Urban
  • Rear Tyre - Continental Contact Urban
  • Front Brake - Brompton Dual Pivot Calipers
  • Rear Brake - Brompton Dual Pivot Calipers
  • Grips - Superlight lock-on grips with precision ground foam adhered to ultrathin engineered core
  • Saddle - Fizik Aliante R7
  • Seatpost - Extended, Black (35"")
  • Post Clamp - Machined aluminium seat clamp and rear frame clip in anodised matt black finish
  • Weight - From 9.99 kg
  • Manufacturers disclaimer - Please note that, based on component availability and other factors, specifications are subject to change without notice.
Sizing Information
Professional Opinion