T Line One - 1 Speed

Colour: Blasted Titanium
Handlebars: Mid
In stock - dispatched within 2 working days
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T line front carrier
Front carrier block
Brompton bags can be quickly and  easily attached to the front carrier block, which results in a secure and comfortable ride with an optimally balanced load.
T line handlebars
Superlight carbon handlebars
With two options, low - for a sporty, more forward position or Mid for a natural, relaxed position.
Superlight saddle
Superlight carbon saddle
With oval carbon rails and carbon reinforced base, lightweight padding, integrated carry handle and light mount. Superlight pentaclip.
Schwalbe one tyre
Schwalbe ONE black tyres
With its 349 x 35C size, it can provide a comfortable ride for riders of all sizes, and it is designed with safety in mind, with its reflective sidewall to help cyclists stay visible to others.
T line seatpost
Superlight extended seatpost
The first bike in the world with a steel-armoured carbon seat post, for an inside leg up to 89cm / 35 inches.
Carbon fork
One piece carbon fork and steerer with magnetic pedal holder.

Brand-new everything. Except for 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.
Brompton T Line folded

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
Back wheel of T Line
T Line One - 1 Speed

Sometimes the greatest of adventures are born from the simplest of ideas. The T Line ONE from Brompton proves that minimalism still encompasses power. Pure in its intentions with expert engineering, this model is the perfect everyday bike for active individuals looking to turn each moment into a carefree adventure.

Weighing just 16.4 lbs, you can commute, travel and explore with nothing holding you back. Don't let this fool you though, as the T Line ONE is a powerhouse that performs amazingly every time. Whilst the titanium frame weighs 37% less than traditional all-steel models, this bike is suitable for users of up to 242 lbs! The frame is also incredibly durable, allowing excellent suspension and road performance.

If the style is important to you, this stylish Brompton classic will not disappoint. With an ergonomic frame that represents the agile future ahead of you, finishing touches such as the discreet fixings and posture-enhancing handlebars boast a characterful design sure to put a smile on anyone's face.

Brompton offers you much more than a new bike; it offers a way of life. Soaring through your day on the T Line ONE will prove that you can go anywhere and experience everything.

1 Speed
From 16,4 kg
From 16,4 kg
1 Speed (One)
Folded Size
25.4" (H) x 23.6" (W) x 12.6" (D)
Main Frame
Grade 9 titanium tubes, welded main frame with cast titanium bottom bracket manifold
Rear Frame
Advance Superlight rear frame with replaceable hanger, suspension block and 54mm roller wheels
One piece carbon fork and steerer with magnetic pedal holder
Superlight lock-on foam grips
Superlight, Black (33')
Machined aluminium seat clamp and rear frame clip in anodized matt black finish
Hinge Clamps
Machined aluminium self-aligning hinge clamp levers and plates anodized matt black finish
Superlight cnc aluminium pedal set with left hand QR pedal
Brompton 1 speed drivetrain
Number of gears
One Speed
Superlight carbon crankset with hollow BB30 axle, integrated spider, 50T chainring and chainguard
Bottom Bracket
FSA Mega Evo Bottom Bracket
Grade 9 titanium diameter tubes with integrated headset and spring loaded steerer catch hinge
12 tooth
Rear Wheel
Superlight Advance 1 speed wheel - Lightweight rim, double-butted spokes and aluminium hub body
Front Wheel
Lightweight rim, double butted spokes and aluminium hub with sealed bearings and allen key axle
Schwalbe ONE with Addix race compound and v-guard puncture protection
Tubolito S-tubo 34g tube with presta valves
Not included
Not included
Dual Pivot Calipers
Front Carrier
Large diameter front carrier block adaptor for all types of Brompton luggage
On Bike Accessories
Not included

Reviews & Questions

T Line One - 1 Speed

Delivery & Returns


Get free delivery on all of our products, sent by our trusted courier partner between 3-5 working days, with no cost to you. Easy set up. Follow the Quick Start Guide to add your saddle and do some basic checks, and you’ll be ready to cycle away in less than 10 minutes from opening the box.


Brompton is committed to quality; if our products have failed you in any way, please return them and we will either exchange them or give you your money back. If the product is faulty or has arrived damaged, we will reimburse the cost of return postage. Unwanted items may be returned within 28 days at your cost.


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