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T Line
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T Line

2023 Design & Innovation Award Winner. This is Brompton. Reinvented. 16.4 lbs. Precision engineered titanium.
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T Line

2023 Design & Innovation Award Winner. This is Brompton. Reinvented. 16.4 lbs. Precision engineered titanium.
Once you receive an invite to purchase email please configure your bike and sign in • Limited stock available
Choose Your Model
Available in
T Line One
Selected
From $5,225 - 16.4 lbs
T Line in its purest form, the single-speed machine. 16.4 lbs. Precision-engineered titanium. For minimalist commuters, flatter cities, and strong legs. Sold Out.
1 Speed • Front Carrier Block
Selected
T Line Urban
Selected
From $5,500 - 17.5 lbs
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 • Fenders • Front Carrier Block
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
Jeff Staple carrying the Brompton T Line with the saddle rested over his shoulder
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 16.4 lbs in total, the T Line is comparable to a carbon road bike. Yet, it can be comfortably ridden by a 242 lbs 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
Jeff Staple unfolding his Brompton T Line
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, 242 lbs 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
Honoree in Transportation, Fast Company Innovation by Design Awards 2022
A graphic logo of Fast Company's Innovation by Design 2022 Award, given to Brompton T Line in 2022
“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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T LineバイクのOne
T Line One
From $5,225 - 16.4 lbs
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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T LineバイクのUrban
T Line Urban
From $5,500 - 17.5 lbs
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. 243 lbs load carrying for you and your luggage.
4 Speed
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Shipping & returns
T Line Upgrade Parts
Useful add-on features engineered to enhance your T Line ride.
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1
Looking for something else?
Go electric?
Brompton C Line Electric Explore Flame Lacquer on a white background - unfolded
Electric C Line Explore
From $3,700 — 34 lbs
A steel mainframe?
Brompton P Line Urban Midnight Black Metallic on a white background - unfolded
P Line Urban
From $3,100 — 21.8 lbs
More colour options?
Brompton C Line Explore Fire Coral on a white background - unfolded
C Line Explore
From $1,875 — 26.6 lbs

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7 Year Warranty

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Arrives ready to ride with 28 days to return

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