Drivetrain |
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Brompton Wide-range 6 speed drivetrain (2 x 3 speed), 302% range |
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Frame |
4130 crmo front triangle, crmo dropouts with rack / fender mounts,68 mm BSA BB shell |
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 |
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Stem |
Bombtrack JAUNT aluminium quill stem, -17° |
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Handle Bar |
Bombtrack HORIZON flat bar, 560 mm, 25.4 mm, 8° backsweep |
High Handlebars – Brompton triple butted 6061 aluminium handlebar with shot-peened finish |
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Fork |
Full 4130 crmo, 1'' threaded steerer, with rack and fender mounts |
Steel brazed fork |
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Seats |
Seat Clamp : integrated seat clamp |
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Seatpost |
Bombtrack MYRTLE aluminium seatpost, 27.2 mm x 300 mm |
Brompton standard length Chromoly steel tube. Suitable for maximum inside leg 33″/84cm |
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Grip |
Bombtrack SPACE grip with leather bar tape |
Lock-on grips with soft-compound rubber adhered to an engineered core |
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Crankset |
Bombtrack AF22 aluminium crank, square taper |
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Pedals |
Bombtrack STROLL aluminium pedal |
Brompton Folding left hand and non-folding right-hand pedals |
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Chain |
KMC X9 chain, 1/2'' x 11/128'' |
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Shifters |
DIA Compe ENE W downtube shifter |
Brompton 2 and 3 speed Trigger shifters |
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Saddle |
Bombtrack HARRIS saddle |
Brompton saddle with integrated carry handle. Incorporates a mount for a Brompton rear light and saddle bag |
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Headset |
Sealed external headset, 1'' threaded |
Brompton headset |
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Derailleur Rear |
MICROSHIFT RD-R51M |
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Hub Front |
Bombtrack DROME sealed front hub, 9 mm female bolt axle |
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Hub Rear |
Bombtrack DROME sealed cassette hub, 10 mm female bolt axle |
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Cassette |
MICROSHIFT CS-H092 9-speed, 11 - 34 T |
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Chainrings |
Bombtrack BIRO aluminium, 44 T |
44T (-12% gearing) |
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Bottom Bracket |
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Square taper bottom bracket |
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