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 |
Specialized A1 premium butted alloy, zero-stack head tube, internal cable routing, 135x9mm forged dropouts, chainstay-mounted disc brake, replaceable alloy derailleur hanger, stealth rack mounts, dropper post compatible |
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Stem |
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3D-forged alloy, 31.8mm, 7-degree rise |
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Handle Bar |
High Handlebars – Brompton triple butted 6061 aluminium handlebar with shot-peened finish |
Stout Mini Rise, alloy, 9-degree backsweep, 15mm rise, 31.8mm |
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Fork |
Steel brazed fork |
SR Suntour XCE 29, 28mm stanchions, Rx Tune, coil spring, QR, 90/100mm travel (size-specific), 46mm offset |
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Seatpost |
Brompton standard length Chromoly steel tube. Suitable for maximum inside leg 33″/84cm |
Alloy, 2-bolt clamp, 30.9mm |
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Grip |
Lock-on grips with soft-compound rubber adhered to an engineered core |
Specialized MTB Grip, lock-on |
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Crankset |
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Stout 2x, forged alloy |
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Pedals |
Brompton Folding left hand and non-folding right-hand pedals |
SBC-54 Flat pedal |
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Chain |
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KMC X8 EPT, anti-rust coating, 8-speed w/ reusable Missing Link™ |
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Shifters |
Brompton 2 and 3 speed Trigger shifters |
microSHIFT, TS39-8R, 2x8-speed |
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Saddle |
Brompton saddle with integrated carry handle. Incorporates a mount for a Brompton rear light and saddle bag |
Bridge Sport, Steel rails, 155/143mm |
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Headset |
Brompton headset |
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Derailleur Front |
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microSHIFT FD-M462, 2-speed |
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Derailleur Rear |
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Microshift Mezzo, 8spd |
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Hub Front |
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Formula 6-Bolt, disc, 100x9mm spacing, quick-release, 32H |
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Hub Rear |
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Formula SP-2125, 6-Bolt freehub, disc, 135x9mm spacing, quick-release |
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Spoke |
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Stainless, 14g |
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Cassette |
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SunRace, 8-speed, 11-34t |
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Chainrings |
44T (-12% gearing) |
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Bottom Bracket |
Square taper bottom bracket |
Square-tapered, 73mm, internal bearings, 122.5mm spindle |
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Front |
349 x 35C Schwalbe Marathon Racer. A puncture resistant tyre with a reflective sidewall |
Fast Trak Sport, 29x2.35" |
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Rear |
349 x 35C Schwalbe Marathon Racer. A puncture resistant tyre with a reflective sidewall |
Fast Trak Sport, 29x2.35" |
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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) |
Specialized alloy, disc only, double-wall, 25mm inner width, 32h |
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Tube |
Schrader valve |
Schrader, 40mm valve |
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