| Drivetrain |
Brompton 3 speed drivetrain, 177% range |
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| Riding Modes |
3 Speed (Utility) |
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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 |
Ultralight 300 Series Alpha Aluminum, Invisible Weld technology, tapered head tube, Control Freak internal routing, DuoTrap S compatible, flat mount disc |
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| Stem |
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Bontrager Elite, 31.8 mm, Blendr compatible, 7 degree |
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| Handle Bar |
Mid handlebar |
Bontrager Comp VR-C, alloy |
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| Fork |
Steel Brazed Fork |
Emonda SL full carbon, tapered carbon steerer, internal brake routing, flat mount disc |
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| Seatpost |
Extended, Silver (35") |
Bontrager Approved, alloy |
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| Grip |
Push-on Rubber Grips |
Bontrager Supertack Perf tape |
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| Crankset |
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Shimano Tiagra 4700 |
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| Pedals |
Non-folding Composite Pedals |
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| Chain |
6061 forged aluminium crank with 44T chainring and integrated chainguard |
Shimano Tiagra HG54, 10 speed |
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| Shifters |
Brompton 3 Speed Shifter |
Shimano Tiagra R4725, short reach lever, 10 speed |
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| Saddle |
A Line saddle with black rails 147mm width
Composite seat clamp and rear frame clip in matt black finish |
Bontrager Montrose Comp |
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| Headset |
Brompton Headset |
FSA Integrated, sealed cartridge bearing, 1-1/8 top, 1.5 bottom |
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| Derailleur Front |
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Shimano Tiagra 4700, braze-on |
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| Derailleur Rear |
Brompton Chain Pusher |
Shimano Tiagra 4700, long cage |
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| Hub Front |
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Bontrager alloy, sealed bearing, centerlock disc |
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| Hub Rear |
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Bontrager alloy, sealed bearing, centerlock disc |
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| Spoke |
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14 g stainless steel |
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| Cassette |
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Shimano Tiagra HG500, 12-28, 10 speed |
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| Chainrings |
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50 / 34 T |
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| Sprocket |
13 Tooth |
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| Bottom Bracket |
Square taper bottom bracket |
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| Front |
Schwalbe Marathon Racer |
Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700 x 25 c |
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| Rear |
Schwalbe Marathon Racer |
Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700 x 25 c |
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| Wheel / RIM |
Rear Wheel: Double-wall rim, 28 spoke, Brompton Standard ratio 3 speed internal gear hub, 13 tooth sprocket
Front Wheel: Double wall rims, 28 spokes laced to a Brompton front hub |
Bontrager Affinity Disc, Tubeless Ready, 24-hole, 21 mm width, Presta valve |
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| Tube |
Schrader Valve |
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