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 |
Felt Integrated Aero Tri UHC Advanced + TeXtreme carbon fiber, MMC with Inside Out construction, 68 mm BSA threaded bottom bracket shell, horizontal dropouts with integrated dropout adjusters, aerodynamically optimized for direct mount rear brake, internal mechanical or electronic cable routing |
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Stem |
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IA non-integrated -6¡ rise, ¯31.8 mm, 90 mm |
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Handle Bar |
High Handlebars – Brompton triple butted 6061 aluminium handlebar with shot-peened finish |
Devox Bayonet 3.1 base bar with Devox Ergomod extensions, ¯31.8 mm, 48 - 51 cm: 390 mm, 54 - 58 cm: 420 mm |
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Fork |
Steel brazed fork |
Felt IA UHC Advanced carbon fiber monocoque construction, 1.125" carbon fiber steerer, blades, dropouts, crown; aerodynamically optimized for a conventional brake |
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Seatpost |
Brompton standard length Chromoly steel tube. Suitable for maximum inside leg 33″/84cm |
Felt Vari Mount Aero Tri UHC Advanced carbon fiber, 300 mm length |
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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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Shimano 105 R7000, 52/36T, 48 -51 cm: 165 mm, 54 -56 cm: 170 mm, 58 cm: 172.5 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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Shimano 11-speed |
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Shifters |
Brompton 2 and 3 speed Trigger shifters |
micro Shift TT 11-speed |
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Saddle |
Brompton saddle with integrated carry handle. Incorporates a mount for a Brompton rear light and saddle bag |
ISM PS1.1 |
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Headset |
Brompton headset |
FSA integrated, 1.125" 36¡/45¡ sealed ACB cartridge bearings MR122 {873E-RS}, split top race H2145 {No.11AGY-2} with Felt compression device |
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Derailleur Front |
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Shimano 105 R7000 braze-on |
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Derailleur Rear |
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Shimano 105 R7000 11-speed short cage |
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Hub Front |
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Devox TTR3, sealed cartridge bearing, 11-speed, 130 mm QR, 28H |
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Hub Rear |
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Devox TTR4, 100 mm QR, 24H |
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Spoke |
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2.0 mm stainless steel |
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Cassette |
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Shimano 11-speed, 11-28T |
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Chainrings |
44T (-12% gearing) |
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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 |
Continental Grand Sport Race folding, 700 x 25 c |
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Rear |
349 x 35C Schwalbe Marathon Racer. A puncture resistant tyre with a reflective sidewall |
Continental Grand Sport Race folding, 700 x 25 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) |
Devox 30A, tubeless ready, 19 mm width, 27 mm depth |
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Tube |
Schrader valve |
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