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, DuoTrap S compatible, internal cable routing, flat mount disc, rack & fender mounts |
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Stem |
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Bontrager alloy, 25.4 mm clamp, 10 degree |
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Handle Bar |
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Bontrager Riser, 25.4 mm, 30 mm rise |
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Fork |
Superlight Titanium fork with a threaded headset |
FX Steel, flat mount disc, rack mounts, 405 mm axle-to-crown, ThruSkew |
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Seatpost |
Brompton Standard Chromoly steel tube – gloss black. Suitable for maximum inside leg 33″/83cm |
Bontrager alloy, 27.2 mm, 12 mm offset, 330 mm length |
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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, with chainguard, 170 mm length |
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Pedals |
Brompton Folding left hand and non-folding right-hand pedals |
Wellgo nylon platform |
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Chain |
Hollow pin Superlight Advance Chain |
KMC Z51 |
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Shifters |
Brompton 4 speed trigger shifter |
Shimano Altus EF500, 7 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 Sport |
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Headset |
Brompton Superlight headset |
1-1/8 threadless, sealed cartridge bearings |
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Derailleur Front |
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Shimano Tourney TY510, 34.9 mm clamp, top swing, dual pull |
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Derailleur Rear |
Patent-pending direct mount 4 speed derailleur |
Shimano Altus M310 |
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Hub Front |
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Formula DC-31, alloy, 6-bolt, 6/7/8 speed freewheel |
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Hub Rear |
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Formula DC-20, alloy, 6-bolt, 5 x 100 mm QR |
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Spoke |
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14 g, stainless |
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Cassette |
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SunRace MFM300 freewheel, 14-34, 7 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 H2, wire bead, 30 tpi, 700 x 35 c |
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Rear |
Schwalbe ONE Black Tyre |
Bontrager H2, wire bead, 30 tpi, 700 x 35 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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