Brompton has launched a new generation of its P Line folding bike, the Mk II version coming with a new aluminium crankset and handlebar with ergonomic grips and a carbon fork. It also has Brompton’s existing Superlight Saddle

The P Line – which evolved from the Brompton Superlight in 2021 – is designed as a lightweight folding bike for commuting and other urban riding, featuring a titanium rear frame and fork that makes it lighter than the brand’s standard all-steel C Line. The “P” stands for Performance.

2026 Brompton P Line Studio pushing seatpost down outdoors
2026 Brompton P Line Studio pushing seatpost down outdoors (Image Credit: Brompton)

It folds down to 58.5cm x 56.5cm x 27cm – in about 20 seconds, when you get the hang of it.

Brompton says, “At the heart of the P Line is a commitment to performance you can feel. Superlight components reduce overall weight for faster acceleration and easier carrying, while maintaining the strength and durability riders expect from Brompton. The result is a bike that responds instantly – whether weaving through traffic, climbing urban inclines, or accelerating away from the lights.”

2026 Brompton P Line Studio folding outdoors
2026 Brompton P Line Studio folding outdoors (Image Credit: Brompton)

The updated P Line comes with a carbon fork that’s designed to absorb road buzz and a new aluminium handlebar that’s wider than previously to “provide greater control and confidence when cornering and accelerating.”

You also get an “all-new aluminium crankset with 160mm arms for smoother, more efficient pedalling and greater power transfer”, CNC-milled aluminium pedals (the left one detaches in seconds and stows magnetically behind the fork for a more compact fold), and ergonomic grips designed to provide cushioning and support.

Inline with its high-performance ambitions, the P Line comes with Brompton’s Superlight Saddle, which is 23% lighter than the standard Brompton saddle. It features a carbon base that’s designed to flex, chromoly rails, and an integrated handle that’s intended to help when you’re carrying the bike.

2026 Brompton P Line Studio rear frame folded under
2026 Brompton P Line Studio rear frame folded under (Image Credit: Farrelly Atkinson)

Brompton says, “Practical mounts and loops accommodate Brompton luggage and lights, while the cushioning and support are tuned exactly where you need them, delivering lasting comfort across every ride.”

Like all other Bromptons, the P Line is handbuilt in London. It’s available in 4-speed and 12-speed versions.

2026 Brompton P Line Studio unfolded
2026 Brompton P Line Studio unfolded (Image Credit: Brompton)

When we reviewed the P Line Urban in 2022, we called it “a fantastic and innovative high-performance option from Brompton, but pricey.”

We said, “The Brompton P Line is a fabulous machine. It rides beautifully; it’s chock-full of clever features; it weighs just a fraction over 10kg; and it is a Brompton, after all.”

> Read our 2022 review of the Brompton P Line Urban

Brompton says that the P Line S4L (with mudguards and no rack) weighs 9.75kg while the P Line S4R (with a rear rack and with rollers) is 10.15kg

Prices for the Brompton P Line Mk II start at £2,399. Head over to Brompton’s website for more prices.

We have a new Brompton P Line in for review here at road.cc so find out how we get along with it in the coming weeks.