Drivetrain |
Brompton 4 speed drivetrain, 163% range |
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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 Series Alloy Frame w/ Integrated Headtube, Internal Cable Routing & Smooth Welding |
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Stem |
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Forged Alloy Top-Load, 45mm Ext. |
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Handle Bar |
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Alloy Bar, 6.5" Rise |
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Fork |
Superlight Titanium fork with a threaded headset |
Full Cr-Mo 1 1/8" Threadless w/ Tapered Legs |
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Seats |
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Haro Slim Plastic Pivotal |
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Seatpost |
Brompton Standard Chromoly steel tube – gloss black. Suitable for maximum inside leg 33″/83cm |
Alloy Pivotal, 27.2mm
Clamp : Alloy, 31.8mm |
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Grip |
Superlight lock-on grips with precision ground lightweight foam adhered to ultrathin engineered core weighing just 42g per pair |
Mini Micro-Knurl Grips |
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Crankset |
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2-pc Alloy w/ 24mm Hollow Spindle, 170mm |
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Pedals |
Brompton Folding left hand and non-folding right-hand pedals |
DX Alloy, 9/16" |
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Chain |
Hollow pin Superlight Advance Chain |
KMC Z33 |
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Shifters |
Brompton 4 speed trigger shifter |
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Gear |
4-speed gear system |
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Saddle |
Fizik Aliante R7 – a comfortable saddle with lightweight performance from its Composite Carbon Nylon shell |
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Headset |
Brompton Superlight headset |
Sealed Internal 1 1/8" |
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Derailleur Rear |
Patent-pending direct mount 4 speed derailleur |
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Hub Front |
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Low Flange Alloy 36h, Sealed Bearing |
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Hub Rear |
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Alloy Disc Cassette 36h, Sealed Bearing, 6-Bolt |
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Chainrings |
6061 forged aluminium crank with 50T chainring and integrated chainguard |
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Sprocket |
11-13-15-18 Tooth |
38t Alloy |
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Bottom Bracket |
Square taper bottom bracket |
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