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T Line
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T Line

This is Brompton. Reinvented. 7.45 kg. Precision engineered titanium.
A Brompton T Line bike in studio lighting

T Line

This is Brompton. Reinvented. 7.45 kg. Precision engineered titanium.
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Available in
One
Selected
From £3,750 - 7.45kg
T Line in its purest form, the single-speed machine. 7.45 kg. Precision-engineered titanium. For minimalist commuters, flatter cities, and strong legs.
1 Speed • 7.45kg
Selected
Urban
Selected
From £3,970 - 7.95kg
The ultimate 4-speed folding bike. Precision-engineered titanium. All-new, ultra-light compact drivetrain with a gearing ratio fine-tuned for city performance.
4 Speed • 7.95kg
Selected
A welder and their equipment flashing whilst working on a Brompton T Line
T Line
T Line
Brand-new everything. Except the fold.

The all-new ultra-light titanium frame. Over 150 specially developed weight-saving components. Three years of obsessive material choices and rigorous testing. Everything brand-new except the fold. Andrew Ritchie, our founder, obsessed over that 40 years ago. Never bettered, just refined, it’s the original and still the best.

A folded Brompton T Line under purple mood lighting
A view of the Brompton T Line rear triangle from the non-drive side
T Line
T Line
Ultra-light. As strong as steel.

The entirely re-engineered T Line titanium frame weighs 37% less than our original all-steel equivalent and is just as strong.

At 7.45 kg in total, the T Line is comparable to a carbon road bike. Yet, it can be comfortably ridden by a 110kg rugby player. And withstand the punishing impact of the city.

T Line
T Line
Compact drivetrain, designed ground-up.
Nothing rides like it—the entirely new* drivetrain. Designed ground-up to sit inside the fold, to be light as possible and for optimal city performance. The carbon crankset gives greater power transfer. The 60-gram derailleur delivers smooth shifting in a small package. The new gear-ratio, tested from Amsterdam to San Francisco, perfected for city roads.

*patent-pending
Close up of the Brompton T Line rear wheel drivetrain
A rear side view of a Brompton T Line on a slight incline
T Line
T Line
Pioneering Carbon Seat Post.
The first bike in the world with a steel-armoured carbon seat post. We know because we invented it.

Ordinary carbon seat posts are stiff, strong and lightweight, but they can't stand up to the daily use of a Brompton. So, we developed a new process to reinforce the limitations of carbon with 0.3mm steel armour.

The result: a superlight seat post that can take the abrasion of the fold, 110kg load and all-weather riding.
T Line
T Line
Every detail sweated
Faster to fold, easier to carry. We studied every interaction with the folded bike and improved it.

New: self-aligning hinges, always set-to-go. A spring-loaded handlebar catch that effortlessly clicks. Larger diameter rolling wheels go with the flow—an easy-grab carbon saddle with an integrated nose handle.

Nothing folds like this Brompton, not even other Bromptons.
A close up of the Brompton T Line mainframe and front frame hinge under purple mood lighting
A view from the front of the Brompton T Line handlebar and stem
T Line
T Line
A seriously fun ride
Brompton ride dynamics have always made owners smile, and now they're elevated in every way.

Carbon cranks and cast Ti bottom bracket shift your power for a faster ride. Naturally, shock-absorbing titanium smooths out the road. The one-piece carbon fork and wider carbon handlebars make it stiffer and even more responsive. This is a serious machine that's seriously fun to ride.

Ready to fly through the city?
“A 4kg saving makes a huge difference when you’re carrying a bike up and down train station steps. I no longer had to lug the bike, I could carry this Brompton as I would some shopping and that was a godsend”
Cyclist logo
“Brompton has come up with a truly exhilarating ride. From the first pedal stroke, it feels speedy, stable and focussed”
T3 Logo
“The T Line is about as much bike as you could hope for in foldable form. I found myself opting to ride the T Line above my usual city get-around, even when folding wasn’t a necessity”
Rouleur logo
“Of all the bikes I’ve ridden for Cyclist over the years, from £12,000 superbikes to double-decker handlebar gravel bikes, the Brompton T Line was the first that had people stopping me in the street”
Cyclist logo
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An unfolded Brompton T Line One
One
From £3,750 — 7.45 kg
The lightest Brompton ever made. Over 150 components designed ground-up. Masterfully built to deliver an ultra-light, agile and responsive ride. This is the benchmark for freedom in the city
1 Speed
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Brompton T Line Urban on a white background - unfolded
Urban
From £3,970 — 7.95 kg
A complete ultra-lightweight performance package built to fly around the city and beyond. Precision-engineered titanium. Ultra-strong and ultra-light. The all-new compact 4-speed gearing system optimised for city riding. Faster, smoother folding mechanisms. 110kg load carrying for you and your luggage.
4 Speed
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Delivery & Returns
Brompton bags
The best way to carry anything on your Brompton bike. Big, small or essentials only, like an extension of your bike, all of our bags click into place, sit secure and are made to last.
Brompton parts
Upgrade or upkeep. Repair or maintain. Genuine Brompton parts keep your bike on the road for longer.
Bike accessories
Useful add-on features engineered to enhance your ride.
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A Brompton Borough Roll Top Bag being adjusted and attached to a Brompton bike.
Brompton Schwalbe Tanwall Tyres fitted to a front wheel, suspended in the air
The contents of a Brompton Toolkit revealed in a person's hands
Looking for something else?
Go electric?
Electric C Line Explore
From £2,995 — 15.53 kg
A steel mainframe?
Brompton P Line Urban Midnight Black Metallic on a white background - unfolded
P Line Urban
From £2,244 — 9.99 kg
More colour options?
Brompton C Line Explore Fire Coral on a white background - unfolded
C Line Explore
From £1,405 — 12.11 kg

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7 Years Warranty

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Free delivery

Arrives ready to ride in 7 working days with 28 days to return​