Brompton Electric P Line 4 Speed - e-Motiq system 2026 - Electric Folding Bike





A compact electric folder built for smooth, quick travel. The P Line’s light rear frame, carbon fork and Brompton’s new e-Motiq motor deliver a refined ride, while the 4-speed gearing keeps things simple across varied city routes.
Key Features:
- Steel main frame with Superlight rear frame and compact geometry
- Carbon fibre fork for low weight and precise steering
- Suspension block for Brompton’s tuned rear support
- Brompton 4-speed derailleur drivetrain
- Brompton dual-pivot calliper brakes
- 16" wheels with Continental Contact Urban tyres
- Quick-release pedals and integrated roller wheels
- Available with 0% APR finance
Drive Information:
- Brompton rear hub motor, 24 Nm torque
- 345Wh Greenway battery
- New Brompton handlebar control screen
The Electric P Line 4 Speed takes Brompton’s well-known folding design and adds a smooth, intuitive electric system that makes everyday rides easier. The main frame uses precision-drawn, heat-treated steel tubing with hand-brazed joints for strength and durability. The Superlight rear frame brings titanium into the mix to cut weight and sharpen the bike’s handling, as well as adding a replaceable hanger and Brompton’s suspension block to keep the ride settled over rougher surfaces. Roller wheels make it easier to manoeuvre the bike when folded.
A carbon fork further reduces weight and adds a responsive feel when steering through traffic or navigating narrow paths. The compact geometry maintains Brompton’s signature quick handling, and the extended seatpost suits a wide range of riders.
Brompton’s 4-speed drivetrain provides a practical 163% gear range for city gradients, with a light shifter and short, positive shifts. The 54T chainring and 11–18T cassette balance quick acceleration with comfortable cruising. Stopping duties are handled by Brompton’s dual-pivot callipers, offering controlled braking that works well in dry and damp conditions.
The new e-Motiq system is the heart of the bike. Its custom rear hub motor delivers 24 Nm of torque and assists your pedalling with a smooth, natural feel. The 345Wh Greenway battery offers up to 90 km of range depending on terrain and assist level, and charges fully in around five hours. The handlebar control screen displays essential ride data clearly and allows quick changes to assist modes.
What sets e-Motiq apart is how it adapts to you. Over the first 100 km of riding, the system learns your style and refines its range predictions every few kilometres, giving you more accurate feedback and support tuned to your habits. The result is an e-bike that feels increasingly personal and predictable the more you ride it.
Superlight quick-release pedals, Continental Contact Urban tyres and a comfortable Brompton saddle round out a practical build designed for mixed transport, compact storage and day-to-day reliability.
The Electric P Line 4 Speed offers a blend of portability, comfort and smart assistance that makes commuting and city journeys feel noticeably easier—helping you arrive fresh, relaxed and ready for the day.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | Precision drawn heat-treated steel tubing with hand brazing and selected auto-brazed joints. Advance Superlight rear frame with replaceable hanger, suspension block and 66mm roller wheels |
| Fork | Carbon Fibre |
| Headset | Brompton headset |
| Front Brake | Brompton Dual Pivot Calipers |
| Rear Brake | Brompton Dual Pivot Calipers |
| Rear Mech | Brompton 4-speed drivetrain, 163% range |
| Shifters | Brompton 4-speed derailleur shifter |
| Speed | 4 |
| Rims | Double-wall rim, 20 spokes |
| Front Hub | Double-wall rim, 20 spokes laced to a Brompton front hub |
| Rear Hub | Brompton Rear Motor 24Nm of Torque and 250W of Motor Power |
| Front Tyre | 16" Continental Contact Urban |
| Rear Tyre | 16" Continental Contact Urban |
| Seat Post | Extended, Black (35") |
| Saddle | Superlight |
| Chainset | 6061 forged new aluminum crank with 54T chainring and integrated chainguard |
| Bottom Bracket | Square Taper |
| Cassette | 11-18 Tooth |
| Pedals | Superlight Quick Release |
| Battery Size (WH) | 345Wh Greenway - Up to 90km range with 5-hour full charge |
| Motor | Brompton Rear Motor 24Nm of Torque and 250W of Motor Power |
| User Interface | New Brompton Handlebar Control Screen |
![]()
Brompton Folding Bike Size Guide
All Brompton bikes have the same size frame and with the standard seatpost fitted are suitable for riders with an inside leg measurement up to 84cm or 33".
Longer seatposts are available for those with inside leg measurements over 84cm.
|
Seatpost |
Inside Leg (Centimetres) |
Inside Leg (inches) |
|
Standard |
Up to 84 |
Up to 33” |
|
Extended |
84 - 89 |
33” – 35” |
|
Telescopic |
Over 89 |
Over 35” |
Customer reviews and Q&A's are disabled because you declined functional cookies.
To enable reviews and Q&A's click the 'Cookie Settings' button below and enable functional cookies.





Brompton Electric P Line 4 Speed - e-Motiq system 2026 - Electric Folding Bike
Cycle to Work is a salary sacrifice scheme, where you can save up to 42% off a new Bike and Safety equipment. This means the cost is deducted from your salary as a non-cash benefit, so you save on tax and national insurance.
Here at Tredz, we accept Cycle to Work vouchers from all national schemes. For more information click here.
We understand that the Cycle to Work process can be a little slower than we would all like - so to help you pick the perfect ride, we're now offering FREE Cycle to Work Reservations on any in stock bike (T&C's apply). Simply speak to a member of our Online Bike Experts Team via Live Chat to discuss your reservation. Find out more here.
At Tredz we make finance easy. You can choose from a range of flexible finance repayments from 6 months up to 48 months, choose to place a deposit and pay the balance on finance. Go with a 0% APR finance deal with absolutely no interest on payments, or a 9.9% APR Buy Now Pay later option with a choice of 12 or 24 deferred payment options, or a longer-term 14.9% APR option with lower monthly payments. For more information click here.
We offer a fast, high-quality delivery service with flexible options to suit your schedule - including free delivery* over £30, next day delivery, Click & Collect, and now 24/7 InPost locker delivery for qualifying orders. Learn more about InPost
*Courier deliveries to Northern Ireland, Isle of Man, Isle of Wight, Channel Islands and the Scottish Highlands/Islands will incur a charge.At Tredz, we’re committed to bringing you the best products at the best prices. If you find a product cheaper elsewhere, simply contact us for an immediate response using our live chat service. Click here to discuss your price match with an agent now for help.
Subject to Terms and Conditions
At Tredz, if you are not 100% happy with your order, then you can use our simple hassle free returns service. Simply return the item new and unused in the manufacturers original packaging within 90 days of purchase. Bikes and larger items are collected by courier.
When you receive your bike, all you'll need to do is unpack it, attach the pedals, turn the handlebars and ride.
To help you get started we have put together a handy Bike Building Guide, click here.