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 |
6061 Aluminum, TIG welded w/Disc Tab, 12 x 148 Thru-axle |
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Stem |
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Captain: Threadless 3D Forged, 17D, 31.8 mm, 90 mm, Stoker: Aluminum, 35 Degree Adjustable |
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Handle Bar |
High Handlebars – Brompton triple butted 6061 aluminium handlebar with shot-peened finish |
FSA Vero Aluminum Compact Drop, Double Butted, 31.8 mm |
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Fork |
Steel brazed fork |
Oversized CrMo Unicrown, 1.5 Taper, 12 x 110 Thru-axle |
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Seatpost |
Brompton standard length Chromoly steel tube. Suitable for maximum inside leg 33″/84cm |
Captain: Aluminum Micro Adjust, 27.2 mm; Stoker: Aluminum Suspension, Micro Adjust, 27.2 mm |
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Grip |
Lock-on grips with soft-compound rubber adhered to an engineered core |
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Crankset |
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2-pc Aluminum Forged Tandem, Captain: 50/39/30T, 175 mm, Stoker: 39T, 170 mm |
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Pedals |
Brompton Folding left hand and non-folding right-hand pedals |
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Chain |
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KMC X10 |
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Shifters |
Brompton 2 and 3 speed Trigger shifters |
Shimano Tiagra STI |
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Saddle |
Brompton saddle with integrated carry handle. Incorporates a mount for a Brompton rear light and saddle bag |
KHS Road Padded & Ladies Road Padded |
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Headset |
Brompton headset |
FSA Orbit 1.5E ZS, 1-1/8”~1.5”, Aluminum Cap |
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Derailleur Front |
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Shimano Tiagra, 31.8 mm |
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Derailleur Rear |
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Shimano GRX, RD-RX400 |
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Hub Front |
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Aluminum QR, Sealed Bearing, Disc, Cassette |
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Hub Rear |
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Aluminum QR23, Sealed Bearing, Disc |
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Spoke |
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14G Stainless Black, 40 x 40 |
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Cassette |
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Shimano CS-HG50, 11-36T, 10-Speed |
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Chainrings |
44T (-12% gearing) |
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Bottom Bracket |
Square taper bottom bracket |
Outboard Cartridge Bearing |
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Front |
349 x 35C Schwalbe Marathon Racer. A puncture resistant tyre with a reflective sidewall |
Kenda Kwick Roller Sport K-1029, 700 x 32c, 60TPI Iron Cap |
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Rear |
349 x 35C Schwalbe Marathon Racer. A puncture resistant tyre with a reflective sidewall |
Kenda Kwick Roller Sport K-1029, 700 x 32c, 60TPI Iron Cap |
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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) |
Weinmann XC180 Disc, Double Wall, w/Eyelets |
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Tube |
Schrader valve |
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