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, 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 |
High Handlebars – Brompton triple butted 6061 aluminium handlebar with shot-peened finish |
Bontrager Riser, 25.4 mm, 30 mm rise |
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Fork |
Steel brazed fork |
FX Steel, flat mount disc, rack mounts, 405 mm axle-to-crown, ThruSkew |
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Seatpost |
Brompton standard length Chromoly steel tube. Suitable for maximum inside leg 33″/84cm |
Bontrager alloy, 27.2 mm, 12 mm offset, 330 mm length |
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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, 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 |
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KMC Z51 |
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Shifters |
Brompton 2 and 3 speed Trigger shifters |
Shimano Altus EF500, 7 speed |
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Saddle |
Brompton saddle with integrated carry handle. Incorporates a mount for a Brompton rear light and saddle bag |
Bontrager Sport |
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Headset |
Brompton 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 |
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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 |
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 H2, wire bead, 30 tpi, 700 x 35 c |
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Rear |
349 x 35C Schwalbe Marathon Racer. A puncture resistant tyre with a reflective sidewall |
Bontrager H2, wire bead, 30 tpi, 700 x 35 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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