The Brompton Electric P Line with SuperRoll+ (e-Motiq System / 4-Speed) represents Brompton's performance-oriented, lightweight e-folding platform. Built around a hand-brazed steel main frame, an Advance Superlight titanium rear triangle, and a carbon fiber fork, this build delivers electric assist without the heavy handling of traditional folding e-bikes. Powered by Brompton's e-Motiq rear hub motor system and controlled via an integrated handlebar control screen, it combines a smooth pedal-assist torque sensor with standard Brompton portage convenience.
The inclusion of the SuperRoll+ system adds a 4-wheel base roller frame that shifts the center of gravity when folded, allowing the bike to roll through stations, offices, and airports like a stable piece of luggage. Paired with a lightweight 4-speed derailleur drivetrain, quick-release pedals, puncture-resistant Continental Contact Urban 16-inch tires, and a removable 345Wh battery, this 15.6 kg setup offers a range of up to 90 km (56 miles) on a single charge.
Specifications Breakdown
E-Drive System
Motor: Brompton e-Motiq Rear Hub Motor, 250W power output, 24Nm torque, Smart Torque Sensor, Start Assist Mode.
Battery: 345Wh Greenway Battery (One-click removable, up to 90 km / 56 miles range, ~5-hour full charge time).
Display & Controls: Brompton Handlebar Control Screen with dynamic range prediction, over-the-air (OTA) software updates, and Bluetooth app connectivity.
Frameset & Ergonomics
Main Frame: Precision-Drawn Heat-Treated Steel Tubing with Hand-Brazed Joints.
Rear Triangle & Fork: Advance Superlight Titanium Rear Frame + Carbon Fibre Fork.
Handlebar Options: Low, Mid, or High Riser Handlebars with Ergonomic Lock-On Grips.
Folded Dimensions: 23.0" H x 22.2" W x 10.6" D (58.5 cm H x 56.5 cm W x 27 cm D).
Seatpost & Saddle: Black Superlight Seatpost (Standard/Extended/Telescopic) with Superlight Saddle.
Drivetrain & Brakes
Drivetrain: Brompton 4-Speed External Derailleur (163% Gear Range).
Shifter: Brompton 4-Speed Derailleur Shifter.
Brakes: Brompton Dual-Pivot Caliper Brakes (Front & Rear).
Crankset: 6061 Forged Aluminium Cranks with 54T Chainring and Integrated Chainguard.
Wheels & Accessories
SuperRoll+ System: Factory Rear Roller Frame with a 4-wheel base layout for low-resistance rolling in folded Suitcase or Shopper mode.
Rims & Hubs: Double-Wall Rim (20 Spokes) Front Hub / Custom e-Motiq Rear Hub Motor.
Tires: Continental Contact Urban, 16" (35-349) with Reflective Sidewalls.
Pedals: Superlight Quick-Release Left-Hand Pedal, Fixed Right-Hand Pedal.
Integrated Accessories: Front Carrier Block Adaptor (compatible with Brompton Electric bags), Full-Coverage Mudguards, Front & Rear Battery-Powered Lights.
Approx. Weight: ~15.6 kg / 34.4 lbs (including battery).
Key Highlights
Next-Gen e-Motiq Drive System: Brompton's custom rear hub motor delivers 250W of power and 24Nm of torque, backed by a intelligent torque sensor and an adaptive algorithm that personalizes range estimation over time.
Titanium & Carbon Construction: Utilizing an Advance Superlight titanium rear frame and carbon fork cuts total chassis weight, making lifting and carrying the folded bike significantly easier.
SuperRoll+ Transit Capability: The upgraded 4-wheel base Roller Frame shifts the folded bike's center of gravity, enabling smooth, stable pushing and pulling on flat ground like a rolling suitcase.
345Wh Removable Battery: Detaches with a single click for indoor charging, providing up to 90 km of electric assist to flatten steep city hills.
Crisp 4-Speed Urban Drivetrain: Keeps shifting simple and direct with a 163% range 4-speed derailleur, avoiding the excess rotational weight of internal gear hubs.