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 |
Alpha Gold Aluminum, low-step design, DuoTrap S compatible, disc brake, rack & fender mounts |
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Stem |
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Bontrager alloy quill, 31.8 mm clamp, adjustable rise, Blendr compatible |
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Handle Bar |
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Bontrager alloy, 31.8 mm, comfort sweep |
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Fork |
Superlight Titanium fork with a threaded headset |
Alloy, disc, rack mounts, 415 mm axle-to-crown |
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Seatpost |
Brompton Standard Chromoly steel tube – gloss black. Suitable for maximum inside leg 33″/83cm |
Alloy, adjustable suspension, 27.2 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 |
Bontrager Satellite |
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Crankset |
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Forged alloy |
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Pedals |
Brompton Folding left hand and non-folding right-hand pedals |
Bontrager Satellite City pedal |
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Chain |
Hollow pin Superlight Advance Chain |
KMC Z7 |
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Shifters |
Brompton 4 speed trigger shifter |
Shimano Altus M310, 8 speed |
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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 |
Bontrager Boulevard |
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Headset |
Brompton Superlight headset |
1-1/8 threadless, semi-integrated, semi-cartridge bearings |
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Derailleur Front |
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Shimano Tourney TY710, 34.9 mm clamp, top swing, dual pull |
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Derailleur Rear |
Patent-pending direct mount 4 speed derailleur |
Shimano Tourney TY710, 34.9 mm clamp, top swing, dual pull |
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Hub Front |
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Formula DC22 alloy |
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Hub Rear |
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Formula DC-20, alloy, 6-bolt |
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Cassette |
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Shimano HG31, 11-32, 8 speed |
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Chainrings |
6061 forged aluminium crank with 50T chainring and integrated chainguard |
48/38/28 |
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Sprocket |
11-13-15-18 Tooth |
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Bottom Bracket |
Square taper bottom bracket |
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Front |
Schwalbe ONE Black Tyre |
Bontrager H5, wire bead, 30 tpi, 700 x 45 c |
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Rear |
Schwalbe ONE Black Tyre |
Bontrager H5, wire bead, 30 tpi, 700 x 45 c |
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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 |
Bontrager Connection, alloy, double-wall, 32-hole, schrader valve |
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