Drivetrain |
Brompton 4 speed drivetrain, 163% range |
-- |
|
|
Frame |
Main Frame: Precision drawn heat-treated steel tubing with hand brazing and selected auto-brazed joints
Rear Frame: Superlight Advance rear frame made from Titanium with a replaceable hanger, redesigned suspension block and new 54mm roller wheels |
6061 aluminum |
|
|
Stem |
-- |
Alloy front load, 30mm reach |
|
|
Handle Bar |
-- |
5.2” rise, hi-tensile steel |
|
|
Fork |
Superlight Titanium fork with a threaded headset |
Hi-tensile steel with 1” chromoly steerer tube and tapered legs |
|
|
Seats |
-- |
DK Mini 1-piece seat/post combo |
|
|
Seatpost |
Brompton Standard Chromoly steel tube – gloss black. Suitable for maximum inside leg 33″/83cm |
Integrated, 22.2mm, alloy |
|
|
Grip |
Superlight lock-on grips with precision ground lightweight foam adhered to ultrathin engineered core weighing just 42g per pair |
DUO Brand Mini |
|
|
Crankset |
-- |
Forged alloy 3-piece, 155mm |
|
|
Pedals |
Brompton Folding left hand and non-folding right-hand pedals |
Junior PC platform |
|
|
Chain |
Hollow pin Superlight Advance Chain |
KMC 1/8” |
|
|
Shifters |
Brompton 4 speed trigger shifter |
-- |
|
|
Gear |
4-speed gear system |
-- |
|
|
Saddle |
Fizik Aliante R7 – a comfortable saddle with lightweight performance from its Composite Carbon Nylon shell |
-- |
|
|
Headset |
Brompton Superlight headset |
1” threadless press-in |
|
|
Derailleur Rear |
Patent-pending direct mount 4 speed derailleur |
-- |
|
|
Hub Front |
-- |
Alloy, loose ball, 3/8” chromoly axle |
|
|
Hub Rear |
-- |
Alloy, loose ball, 3/8” chromoly axle, 16-tooth freewheel |
|
|
Chainrings |
6061 forged aluminium crank with 50T chainring and integrated chainguard |
-- |
|
|
Sprocket |
11-13-15-18 Tooth |
42-tooth, alloy, 5-bolt chainring |
|
|
Bottom Bracket |
Square taper bottom bracket |
-- |
|
|