Brompton T-Line 4 Speed

Ultralight titanium. The lightest Brompton ever made.

The T Line is Brompton stripped down to its purest form - redefined in titanium and carbon to deliver the lightest, most responsive ride in the range. It’s faster, lighter and more agile, transforming how a folding bike performs in the city. Designed for riders who prioritise portability and performance, it delivers road-like ride in a compact folding format.

Frame and build

From 7.95kg (17.5lbs) 4speed | 8.8Kg (19.4lbs) 12 Speed

Hand-built titanium main frame and rear frame

Carbon fork for reduced weight and improved vibration damping

Carbon handlebars for a lighter, smoother ride

Gearing and drivetrain

Choice of single-speed, 4-speed derailleur, or 12-speed hub plus derailleur gearing

Carbon crankset for maximum stiffness and responsiveness

Fold and portability

Superlight quick-release pedal system with magnetic stow for left pedal

Self-aligning hinge clamps for faster, easier folding

Larger, tri-spoke Advanced Roller Wheels for smoother movement when rolled folded

Optional Advanced Roller Rack with four wheels for improved portability

Luggage and contact points

Unique Brompton Front Carrier Block system for stable, frame-mounted luggage

Brompton Superlight Grips for reduced weight and improved comfort

Superlight Carbon Saddle with carbon base, integrated carry handle, and luggage and light mounts

Tyres and tubes

Schwalbe One with Addix Race compound and V-Guard puncture protection

Tubolito S-Tubo 34 g inner tubes with Presta valves for reduced weight