Drivetrain |
Brompton Wide-range 6 speed drivetrain (2 x 3 speed), 302% range |
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Frame |
Main Frame : Precision drawn heat-treated steel tubing with hand brazing and selected auto-brazed joints
Rear Frame : Hand brazed cold-formed micro-alloy steel tubing |
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 |
High Handlebars – Brompton triple butted 6061 aluminium handlebar with shot-peened finish |
Bontrager alloy, 31.8 mm, comfort sweep |
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Fork |
Steel brazed fork |
Alloy, disc, rack mounts, 415 mm axle-to-crown |
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Seatpost |
Brompton standard length Chromoly steel tube. Suitable for maximum inside leg 33″/84cm |
Alloy, adjustable suspension, 27.2 mm |
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Grip |
Lock-on grips with soft-compound rubber adhered to an engineered core |
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 |
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KMC Z7 |
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Shifters |
Brompton 2 and 3 speed Trigger shifters |
Shimano Altus M310, 8 speed |
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Saddle |
Brompton saddle with integrated carry handle. Incorporates a mount for a Brompton rear light and saddle bag |
Bontrager Boulevard |
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Headset |
Brompton 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 |
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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 |
44T (-12% gearing) |
48/38/28 |
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Bottom Bracket |
Square taper bottom bracket |
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Front |
349 x 35C Schwalbe Marathon Racer. A puncture resistant tyre with a reflective sidewall |
Bontrager H5, wire bead, 30 tpi, 700 x 45 c |
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Rear |
349 x 35C Schwalbe Marathon Racer. A puncture resistant tyre with a reflective sidewall |
Bontrager H5, wire bead, 30 tpi, 700 x 45 c |
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Wheel / RIM |
Front-wheel: Double-wall rim, 28 spokes laced to a Brompton front hub.
Rear-wheel: Double wall rim, 28 spoke, Brompton Wide ratio 3 speed internal gear hub with 2 speed external gears (13 and 16 tooth) |
Bontrager Connection, alloy, double-wall, 32-hole, schrader valve |
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Tube |
Schrader valve |
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