2021 Brompton T-Line Titanium 4-Speed 8.93kg - Used

This is a 2021 Brompton T-Line, a British-made folding bike built around Grade 9 titanium tubes and a carbon fork, designed to be lighter and more responsive than Brompton's standard steel models. At 8.93kg, it's noticeably easier to carry than conventional Bromptons, shedding nearly 4kg through material choice alone. The T-Line uses a 4-speed drivetrain with Brompton's compact derailleur, engineered to sit cleanly inside the fold during storage. It's a One Size frame with a titanium seatpost and comes finished in blasted titanium.

The drivetrain runs a 56-tooth chainring with 170mm crank arms and Brompton's 4-speed trigger shifters. The cassette is a 4-speed block suited to urban riding, offering enough range for city cycling without the complexity or weight of more gears. The carbon fork is one-piece construction, and the removable pedals help reduce the folded footprint. Tyres are Schwalbe 16-inch (35-349), the standard size for Bromptons, which keeps the bike compact and agile in traffic but demands slightly more effort on longer flat stretches compared to larger wheels.

This particular bike is in good condition and has been used regularly. The titanium seatpost shows some rubbing on the anodizing from repeated height adjustments, which is normal wear. There's minor cable rub on the frame near the folding point and light tyre contact marks under the bottom bracket, both typical of regular folding. A couple of light scratches appear on the stem and a mark on the right crank arm. All marks are cosmetic; the frame and carbon components are structurally sound.

The T-Line suits commuters who combine cycling with public transport, or anyone who needs to fold a bike daily into an office, flat, or train. The lightweight titanium construction makes it genuinely pleasant to carry up stairs or onto buses, and the 4-speed drivetrain covers the speed range needed for stop-start city riding. The bike has been serviced and checked by mechanics, verified for authenticity, and registered on the BikeRegister database.