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 |
99M Series heat treated aluminum alloy custom formed & multi-butted tubing |
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Stem |
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Forged aluminum 35mm extension - 7° rise |
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Handle Bar |
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Prevelo aluminum large bore - 600mm width x 40mm rise with 31.8mm to 22mm taper |
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Fork |
Superlight Titanium fork with a threaded headset |
Spinner 300 20 AIR - 80mm travel - ⌀30mm Stanchion - lockout and adjustable compression |
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Seats |
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Aluminum alloy with quick release |
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Seatpost |
Brompton Standard Chromoly steel tube – gloss black. Suitable for maximum inside leg 33″/83cm |
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Grip |
Superlight lock-on grips with precision ground lightweight foam adhered to ultrathin engineered core weighing just 42g per pair |
HEIR Kraton rubber lock-on |
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Crankset |
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HEIR direct mount cold forged - 120 mm crank arm length |
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Pedals |
Brompton Folding left hand and non-folding right-hand pedals |
Composite |
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Chain |
Hollow pin Superlight Advance Chain |
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Shifters |
Brompton 4 speed trigger shifter |
SRAM GX Trigger |
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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 |
Prevelo big kid saddle |
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Headset |
Brompton Superlight headset |
1 1/8" threadless with sealed cartridge bearings |
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Derailleur Front |
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SRAM GX |
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Derailleur Rear |
Patent-pending direct mount 4 speed derailleur |
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Hub Front |
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Lightweight alloy 1-piece forged CNC with thru-axle |
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Hub Rear |
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Lightweight alloy 1-piece forged CNC with QR skewer |
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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 |
30T alloy narrow-wide stamped |
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Bottom Bracket |
Square taper bottom bracket |
Sealed cartridge - hollow axle |
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