Brompton T Line Urban 4 Speed - Mid

1. Frame

Mainframe:
Grade 9 titanium tubes, welded main frame with cast titanium bottom bracket manifold
Rear Triangle: 
Advance Superlight rear frame with replaceable hanger, suspension block and 54mm roller wheels
Fork: 
One piece carbon fork and steerer with magnetic pedal holder

Folded size: 599mm wide x 645mm tall by 320mm deep
Weight: 7.95kg 

3. Colour

Main frame: Blasted Titanium
Handlebar stem: Blasted Titanium
Forks: Black carbon
Rear triangle: Blasted Titanium
Decal: Silver
Detailing: Black

4. Handlebars and grips

5. Gears / drivechain

4 speed advance Brompton derailleur system - saving weight over the traditional hub gear system previously favoured by Brompton
Derailleur chain tensioner
Superlight carbon crankset with hollow BB30 axle, integrated spider, 56T chainring and chainguard
FSA Mega Evo Bottom Bracket
106 link Brompton advance chain with connecting link
Superlight pedals (the right one is removable) which were introduced with the T Line
4 rear rear sprockets - 11-13-15-18 tooth
Integrated 4-speed gear shifter on left side of bars - black

6. Front luggage system

No Front Carrier Block is fitted as standard
This T Line uses a T Line specific front carrier block which can be retro-fitted if you want to carry Brompton luggage 

7. Mudguards / Rack / Hinge clamps

8. Roller wheels

New advance roller wheels help keep the bike stable when folded 

9. Tyres / Wheels

Schwalbe ONE with Addix race compound and v-guard puncture protection 
16 inch (ETRTO size 349) wheels with double wall rim

• 28 spokes  on the rear - Lightweight rim, double butted spokes, aluminium hub body and 4 speed freehub body
• 20 spokes on the front - Lightweight rim, double butted spokes and aluminium hub with sealed bearings and allen key axle

The wheels have black hubs, black spokes and black rims (the braking surface is still silver)
Inner tubes -  S-tubo 34g tube with Presta/racing type valve

10. Saddle and pump 

Brompton superlight carbon saddle, this superlight carbon saddle features carbon rails, a carbon reinforced base and lightweight padding, it features a low profile and wave shape and has the under saddle mounting for the Be Seen Lights
Fitted with the superlight pentaclip which is a machined aluminium seat clamp and rear frame clip in anodized matt black finish
Pump not included but can be purchased seperately 

11. Seat height

12. Suspension

13. Lighting / reflectors