Description
Brompton P Line 4-speed Folding Bike
The Brompton P Line 4-speed Folding Bike features a titanium rear frame and forks that are 700 grams lighter than all-steel equivalents, making it noticeably easier to carry, lift, and accelerate. Ideal for busy commutes and spontaneous leisure rides, the naturally shock-absorbing titanium smooths out uneven roads for a refined, comfortable feel. Its responsive handling and elegant design make city exploration faster, lighter, and more enjoyable, whether you’re weaving through traffic or cruising along quieter streets.
Purpose-built 4-speed gearing for the city
Designed in-house by Brompton, the superlight compact 4-speed gearing system is fine-tuned specifically for urban riding. Featuring an all-new 60-gram derailleur, the system is meticulously engineered to fit neatly within Brompton’s famously narrow fold without compromising performance. The result is crisp, reliable shifting and a perfectly judged gear range for flat routes, rolling terrain, and frequent stop-start riding.
Effortless folding with premium, everyday practicality
Folding down in around 20 seconds, the Brompton P Line 4-speed transforms into a compact, easy-to-carry package that fits seamlessly into trains, offices, and small living spaces. Finished with Brompton’s signature minimalist style and high-quality components, it delivers a ride that feels light, controlled, and rewarding every time.
Handlebar options:
- Low: The straight handlebar. For a sporty, more forward position.
- Mid: The riser handlebar. For a natural, relaxed position.
- High: Riser bar with extra height. The ultimate relaxed cruising position.
Technical Specification
| Handlebar Options | Low - Mid - High |
| Claimed Weight | From 10.5 kg |
| Speed | 4-speed |
| 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 ultra-thin engineered core |
| Seatpost | Standard, Black (33") |
| Saddle | Superlight |
| Seatclamp | Machined aluminium seat clamp and rear frame clip in anodised matt black finish |
| Hinge Clamps | Machined aluminium hinge clamp levers and plates with an anodised matt black finish |
| Pedals | Fixed right-hand and quick-release left-hand pedals |
| Drivetrain | Brompton 12-speed drivetrain, 402% range |
| Number of Gears | 4-speed |
| Chainset | 6061 forged aluminium crank with 50T 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 |
| Roller Frame | 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 Folding Bike Sizing
Delivery & Returns
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