Drivetrain |
Brompton 4 speed drivetrain, 163% range |
Single-speed drivetrain |
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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 |
High Tensile Steel |
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Stem |
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Steel, BMX, W/4-Bolt Alloy Face Plate, Black |
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Handle Bar |
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KID-FIT steel BMX handlebar |
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Fork |
Superlight Titanium fork with a threaded headset |
1" Hi Tensile Steel, Straight Legs |
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Seatpost |
Brompton Standard Chromoly steel tube – gloss black. Suitable for maximum inside leg 33″/83cm |
Steel, Black |
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Grip |
Superlight lock-on grips with precision ground lightweight foam adhered to ultrathin engineered core weighing just 42g per pair |
Kraton Rubber, Kid Size, Black |
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Crankset |
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One-Piece Steel, 4-1/2", Black |
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Pedals |
Brompton Folding left hand and non-folding right-hand pedals |
9/16", Black, Small Platform |
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Chain |
Hollow pin Superlight Advance Chain |
K.M.C. 1/2" x 1/8", Black |
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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 |
KID-FIT padded saddle |
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Headset |
Brompton Superlight headset |
Steel, Caged Bearings, Black |
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Derailleur Rear |
Patent-pending direct mount 4 speed derailleur |
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Hub Front |
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Steel, 3/8" Bolt-On Axle, Black |
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Hub Rear |
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Coaster Brake, Black |
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Spoke |
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14G UCP with Brass Nipples |
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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 |
19T x 1/2'' x 1/8'' |
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Bottom Bracket |
Square taper bottom bracket |
Steel, Caged Bearing, Black |
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Stand |
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Steel kickstand |
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Front |
Schwalbe ONE Black Tyre |
20" x 1.95", Black Wall,20" x 1.90-2.125", Schrader Valve |
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Rear |
Schwalbe ONE Black Tyre |
20" x 1.95", Black Wall , 20" x 1.90-2.125", Schrader Valve |
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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 |
Front: 20" x 1.75 x 36H x 14G, Steel-BMX, Bolt-On
Rear: 20" x 1.75 x 36H x 14G, Steel-BMX, W/KT Coaster Brake
Rims: 20" x 36H x 14G, Steel, Black |
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