2025 Brompton T Line One - Mid

Brompton T Line One

T Line - 1 Speed. T Line in its purest form, the single-speed machine. Ideal for minimalist commuters, flatter cities, and strong legs.

The Brompton T Line - 1 Speed is perfect for those who value simplicity and efficiency. With no need to shift gears, it offers a hassle-free, low-maintenance riding experience. Its straightforward design means fewer components, making it lighter and easier to carry and maneuver.

In flat cities, the single-speed setup provides a smooth, consistent ride, allowing you to maintain a steady pace without gear changes. For those with strong legs, it offers a direct, efficient connection between your pedaling power and the bike’s movement.

Experience urban mobility in its purest form with the Brompton T Line - 1 Speed, perfect for minimalist, flat-terrain commuting.

FEATURES

• Ulltralight Titanium
  In the pursuit of lightweight performance, we’ve taken the best of the Brompton experience and amplified it with the power of titanium in pursuit of the lightest folding bike.
• Ultimate lightness
  At 7.45 kg T Line One - 1 Speed delivers unmatched performance and practicality. Fine-tuned for city performance. Optional fenders and luggage system.
• Just as compact
  1-speed gearing system expertly designed to fit inside the fold and weighs from just 7.45 kg.
• Ultimate ride
  The re-engineered titanium frame makes this ultralight folding bike even more dynamic and agile - it’s a joy on the road.
• Carbon throughout
  Vibrations-dampening fork, handlebar and crankset for the smoothest ride ever.
• Beauty in the detail
  Faster to fold, easier to carry. We studied every interaction with the folded bike and improved it. There’s nothing like this Brompton, not even other Bromptons.
• Raw Polished Titanium
  Titanium is ultra strong and ultra light. It’s the world’s number one naturally occurring metal for strength-to-weight ratio. Being naturally corrosion resistant means high shine and zero rust in all conditions. Shot peened for increased strength. The color, dependant on the light, shines between silvery-white to gunmetal gray.

SPECIFICATIONS

• Weight: From 7.45 kg
• Speed: 1-speed
• Material: Titanium
• 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
• Fork: One piece carbon fork and steerer with magnetic pedal holder
• Grips: Superlight lock-on foam grips
• Seatpost: Superlight standard seatpost (33")
• Saddle: Superlight
• Seat Clamp: 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
• Pedals: Superlight cnc aluminium pedal set with fixed right-hand and quick-release left-hand pedals
• Drivetrain: Brompton 1-speed drivetrain
• Number of gears: 1-speed
• Chainset: Superlight carbon crankset with hollow BB30 axle, integrated spider, 50T chainring and chainguard
• Bottom Bracket: FSA Mega Evo Bottom Bracket
• Headset: Grade 9 titanium diameter tubes with integrated headset and spring loaded steerer catch hinge
• Sprockets: 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
• Tyres: Schwalbe ONE with Addix Race rubber mix and V-Guard puncture protection
• Tubes: Tubolito S-tubo 34g tube with presta valves
• Lighting: Reflectors
• Pump: Not included
• Front Carrier Block: Option
• Mudguards: Option
• Rack: Not included
• Brakes: Dual Pivot Calipers