The Brompton P Line 4 Speed at a glance
With a titanium rear frame and front fork, the Brompton P Line Urban folding bike weighs nearly 3.5 lb less than its all-steel counterpart, so it’s even easier to lift and carry around. Brompton designed it to be easy to roll and steer through tight spaces, with its large and light rolling wheels. Its dual-locking seat post system has two positions, fully down for storing or halfway up for rolling. Its 4-speed gear system is fine-tuned for city riding, with a similar gear ratio to the 3-speed without the weight. It’s built to withstand decades of use in the city, with shock-absorbing suspension and Brompton’s lightest, sturdiest wheelset.
Bike Facts
Serving size Carries up to 1 person
| Amount per ride | |
|---|---|
| Joy | 100% |
| Bike Details | |
| Frame Material | Steel / Titanium |
| Brakes | Brompton Dual Pivot Caliper Rim Brakes |
| Tires | 349 x 35C Schwalbe Marathon Racer. Puncture resistant with a reflective sidewall |
| Number of Gears | 4 |
| Rider Height | Standard: 4'7" – 6'2" Extended: 4'7" – 6'5" Telescopic: 4'7" – 6'8" |
| Weight | Approximately 22 lbs |
| Suspension | Brompton specific |
| Max Load (lbs) | 242 |
| Included Accessories | Lezyne Pump Fenders Rack Bell |
| Maintenance Requirements | Medium |
| Folded Size | 25.3" H x 23" W x 10.6" D |
* Best consumed daily for optimal joy. Pairs perfectly with laughter and good company.
Clever Cycles • Brompton P Line 4 Speed
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Details That Matter
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Is This Your Bike? Read On.
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Pure Brompton
Brompton Frame Size Information
How Do I Know Which Size Brompton I Need?
Every Brompton frame is the same size. What changes are the components that fine-tune the fit—namely the seatpost, handlebar type, and stem.
Seatpost Options
Brompton offers three seatpost lengths to match different riders and storage needs:
- Standard: Best for riders with an inside leg up to about 33″. Keeps the bike compact when folded.
- Extended: About 2.5″ longer. Great if you need a little more legroom; because it reaches the ground when folded, the saddle sits higher in the folded position.
- Telescopic: For taller riders (or sharing with one). Extra height without making the folded bike taller. Not standard because it adds a bit of weight.
16″ Wheel Models (C, P, and T Lines)
The classic Brompton lineup shares the same frame geometry but uses different handlebar heights and stems for a tailored fit:
- Low: Sporty, road-bike-like position; good for shorter riders or those who prefer a flatter bar.
- Mid: The all-rounder—neutral and comfortable for most riders.
- High: Upright and relaxed; great for taller riders or a Dutch-bike feel.
For most people, the Mid handlebar is the sweet spot—upright enough for visibility, low enough for control.