Drivetrain |
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Brompton 4 speed drivetrain, 163% range |
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Frame |
Low-profile, lightweight aluminum frame with 12-Inch top tube and integrated foot platform |
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 |
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Stem |
Alloy front load, 40mm length |
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Handle Bar |
6061-T6 series aluminum riser, 31.8mm clamping area |
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Fork |
Hi-tensile steel with 1-Inch steerer tube |
Superlight Titanium fork with a threaded headset |
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Seats |
1-piece padded seat/post combo |
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Seatpost |
Integrated Uni-style, alloy, 25.4mm diameter, 150mm length |
Brompton Standard Chromoly steel tube – gloss black. Suitable for maximum inside leg 33″/83cm |
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Grip |
DUO Brand Mini, soft Krayton rubber compound, 120mm length |
Superlight lock-on grips with precision ground lightweight foam adhered to ultrathin engineered core weighing just 42g per pair |
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Pedals |
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Brompton Folding left hand and non-folding right-hand pedals |
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Chain |
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Hollow pin Superlight Advance Chain |
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Shifters |
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Brompton 4 speed trigger shifter |
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Gear |
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4-speed gear system |
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Saddle |
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Fizik Aliante R7 – a comfortable saddle with lightweight performance from its Composite Carbon Nylon shell |
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Headset |
1-Inch threadless press-in |
Brompton Superlight headset |
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Derailleur Rear |
Loose ball bearing, 3/8-Inch chromoly axle |
Patent-pending direct mount 4 speed derailleur |
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Hub Front |
Loose ball bearing, 3/8-Inch chromoly axle |
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Chainrings |
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6061 forged aluminium crank with 50T chainring and integrated chainguard |
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Sprocket |
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11-13-15-18 Tooth |
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Bottom Bracket |
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Square taper bottom bracket |
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