Brompton T Line 4-Speed Folding Bike 2026 in Blasted Titanium

Test rides available from our Notting Hill branch. Contact the store for further details.Invention innovation imagination. These ideals have been the driving principles at Brompton since the beginning when founder Andrew Ritchie set out to engineer a folding bike to unlock the city. The original Brompton made from robust steel is a design icon in its own right. For five decades it’s set the standard for folding bikes. There’s something about setting a high bar and continuously raising it under your own steam. Those with ambitious agendas move apart. The T Line was conceived to lift the Brompton feeling to a new plane engineered with a lightness unlike anything you’ve experienced – at least not yet. In the pursuit of lightweight performance Brompton have taken the best of the Brompton experience and amplified it with the power of titanium. Ready for lift-off?Key Features & Benefits:Ultimate Ride:The re-engineered titanium frame makes it even more dynamic and agile – it’s a joy on the road. Carbon Throughout:Vibration-dampening fork handlebar and crankset for the smoothest ride ever.Brompton 4 speed:All-new superlight compact drivetrain with a gearing ratio fine-tuned for city performance.Full Specification:Main Frame:Large diameter grade 9 titanium tubes orbital and tig welded main frame with titanium cast bottom bracket sleeve.Rear Frame:Advance Superlight rear frame with replaceable hook redesigned suspension block and new 54 mm roller wheels.Fork:One-piece carbon fork and steerer tube with magnetic pedal support.Number of Gears:4Shifters:Brompton 4 speed trigger shifterChainset:Superlight carbon crankset with BB30 hollow axle integrated spider 50T chainring and chain coverChainrings:50THinge:Self-aligning hinge locking levers in machined aluminium and plates with matt black anodised finish.Rear Cassette:4-speed – 11-13-15-18 teethRear Derailleur:Direct mount 4 speed derailleurBottom Bracket:FSA Mega Exo BBPedals:Superlight aluminium cnc foot pedal with left QR pedalFront Wheel:Lightweight rim double-thickness spokes and aluminium hub body with sealed bearings and hexagonal key axleRear Wheel:Lightweight rim double-thickness spokes and aluminium hub body with sealed bearings and hexagonal key axle.Front Tyre:Schwalbe ONE with Addix racing compound and v-guard puncture protectionRear Tyre:Schwalbe ONE with Addix racing compound and v-guard puncture protectionBrakes:Brompton Dual Pivot CalipersHandlebars:Superlight 31.8 mm carbon handlebar with 560 mm width available in low and medium height.Handlebar Grips:Super-lightweight self-locking foam gripsHeadset:Brompton headsetSaddle:Super-light saddle with oval carbon rails and carbon-reinforced base lightweight padding integrated carry handle and lightweight attachmentSeatpost:Superlight seatpost with carbon core and 0.3 mm steel reinforcement.Folded size:645mm (H) x 585mm (W) x 270mm (D)Accessories:Curved profile mudguards with titanium sheaths and rubberised widening Tubolito S-tube 34g inner tubes with presta valves Brompton front luggage carrier blockWeight:Approx. 7.95 kg