The Brompton P Line 4 Speed Mid Bar Folding Bike offers an effortless gateway to city exploration. Designed for urban adventurers seeking both power and refinement, this high-performance bike blends exceptional engineering with sleek aesthetics to make every ride seamless and enjoyable. Whether cruising through bustling streets or weaving through traffic, the P Line Urban empowers riders to embrace new horizons with confidence and style.
With a lightweight titanium frame that is 700 grams lighter than all-steel equivalents, the bike delivers enhanced portability and agility for smooth, responsive riding. Features such as the suspension block, shock-absorbing titanium frame, and a 4-speed gearing system ensure comfort and control at any pace. Engineered specifically for urban adventures, the P Line’s precise handling and intuitive gearing provide complete confidence, even in tight spaces or alongside busy traffic.
The P Line folds effortlessly into a compact, lightweight package, making it easy to carry and store, ready to explore every corner of the city. Practicality is further elevated by the inclusion of a front carrier block and an easy-to-handle frame, ensuring this bike is as functional as it is stylish.
Technical Specification
Claimed Weight
From 9.99 kg
Speed
4 Speed (Urban)
Material
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
Rear Frame
Superlight Advance rear frame made from Titanium with a replaceable hanger
Fork
Titanium fork with a threaded headset
Grips
Superlight lock-on grips with precision-ground foam adhered to an ultrathin engineered core
Seatpost
Standard
Seatclamp
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
Pedals
Fixed right-hand and quick-release left-hand pedals
Drivetrain
Brompton 4-speed drivetrain, 163% range
Number of Gears
4 Speed - Urban
Chainset
6061 forged aluminium crank with 54T chainring and integrated chainguard
Bottom Bracket
Square taper bottom bracket
Headset
Superlight headset
Shifters
Brompton 4-speed trigger shifter
Sprockets
11-13-15-18 Tooth
Derailleur
Patent-pending direct mount 4-speed derailleur
Rear Wheel
Double-wall rim, double-butted spokes and aluminium hub body
Front Wheel
Superlight front wheel - Lightweight, double-wall rim, double-butted spokes and aluminium hub body
Tyres
Continental Contact Urban
Tubes
Schrader valve
Mudguards
Included
Lighting
Reflectors
Rack
Not included
Brakes
Brompton Dual Pivot Calipers
Front Carrier
Front carrier block adaptor for all types of Brompton luggage
Size Guide
Brompton P Line 4 Speed Mid Bar Folding Bike 2025 Sizing
Delivery & Returns
Reviews
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