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 |
Tectonic T1, aluminum biaxial hydroformed and butted, BMX Race geometry, 86mm press fit BB shell, internal cable routing, 3D Forged, 10 mm dropout, tapered headtube |
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Stem |
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Mongoose, threadless top load, 50 mm |
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Handle Bar |
High Handlebars – Brompton triple butted 6061 aluminium handlebar with shot-peened finish |
Mongoose 4130, 4130 chromoly, 27.5 in width, 8.5 in rise |
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Fork |
Steel brazed fork |
4130 chromoly |
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Seatpost |
Brompton standard length Chromoly steel tube. Suitable for maximum inside leg 33″/84cm |
Aluminum, 250 mm, 27.2 mm |
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Grip |
Lock-on grips with soft-compound rubber adhered to an engineered core |
Mongoose Gate, lock-on, 140 mm |
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Crankset |
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Samox 2-piece, aluminum 175 mm, 24 mm hollow spindle, 4-arm with 44T chainring |
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Pedals |
Brompton Folding left hand and non-folding right-hand pedals |
Mongoose, nylon |
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Chain |
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KMC S1 |
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Shifters |
Brompton 2 and 3 speed Trigger shifters |
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Saddle |
Brompton saddle with integrated carry handle. Incorporates a mount for a Brompton rear light and saddle bag |
Mongoose Unifier Pro, 1 piece rails |
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Headset |
Brompton headset |
Threadless, 1-1/8” sealed integrated, taper compatible |
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Hub Front |
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Aluminum, sealed-bearing cassette, 3/8 in axle, 36H |
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Hub Rear |
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Aluminum, sealed-bearing, 3/8 in bolt, 32H |
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Spoke |
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14G, steel, black |
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Chainrings |
44T (-12% gearing) |
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Bottom Bracket |
Square taper bottom bracket |
BB86 press-fit sealed bearing |
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Front |
349 x 35C Schwalbe Marathon Racer. A puncture resistant tyre with a reflective sidewall |
Arisun XLR8, 20 in x 1.95 in |
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Rear |
349 x 35C Schwalbe Marathon Racer. A puncture resistant tyre with a reflective sidewall |
Arisun XLR8, 20 in x 1.75 in rear, wire bead |
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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) |
Xposure Infinity-XD, aluminum double wall, 30 mm ID, 32H front, 36H rear |
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Tube |
Schrader valve |
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