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 |
4130 chromoly, BMX freestyle geometry, removable brake mounts, integrated headset, mid BB shell |
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Stem |
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Mongoose, threadless top load, 50 mm |
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Handle Bar |
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Mongoose, 4130 chromoly, 29 in width, 8.75 in rise |
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Fork |
Superlight Titanium fork with a threaded headset |
4130 chromoly |
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Seatpost |
Brompton Standard Chromoly steel tube – gloss black. Suitable for maximum inside leg 33″/83cm |
Pivotal, steel, 250 mm, 25.4 mm |
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Grip |
Superlight lock-on grips with precision ground lightweight foam adhered to ultrathin engineered core weighing just 42g per pair |
Mongoose MushXL, 160 mm |
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Crankset |
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2-piece, tubular chromoly hollow spindle, 25T aluminum chainring |
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Pedals |
Brompton Folding left hand and non-folding right-hand pedals |
Mongoose, nylon |
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Chain |
Hollow pin Superlight Advance Chain |
KMC S1 |
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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 |
Mongoose Pivotal |
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Headset |
Brompton Superlight headset |
Threadless, integrated 1-1/8”, cartridge bearing |
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Derailleur Rear |
Patent-pending direct mount 4 speed derailleur |
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Hub Front |
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Aluminum, ball bearing, 3/8 in axle, 36H |
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Hub Rear |
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Aluminum, sealed-bearing cassette, 14 mm axle, 36H |
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Spoke |
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14G, steel, black |
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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 |
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Bottom Bracket |
Square taper bottom bracket |
Mid sealed bearing, 8-spline spindle |
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Front |
Schwalbe ONE Black Tyre |
20 in x 2.4 in, wire bead |
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Rear |
Schwalbe ONE Black Tyre |
20 in x 2.4 in, wire bead |
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Wheel / RIM |
Front Wheel: Superlight front wheel – Lightweight rim, double-butted spokes and aluminium hub body with sealed bearings and hex key axle
Rear Wheel: Superlight 4 speed rear wheel – Lightweight rim, double-butted spokes and aluminium hub body with sealed bearings, newly developed 4 speed freehub body and hex key axle |
Xposure Infinity-XD, aluminum double wall, 30 mm ID, 36H |
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