| 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 |
TeXtreme carbon fiber, MMC with InsideOut construction, carbon fiber BB386 bottom bracket shell, 12 x 142 mm Syntace style thru axle, flat mount disc brake standard, aluminum replaceable rear derailleur hanger, internal electronic-specific cable routing, and high-frequency vibration reducing seat post insert |
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| Stem |
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AR integrated carbon with internal cable and hose routing -6¡ rise, ¯31.8 mm, 48 - 51 cm: 90 mm, 54 - 56 cm: 100 mm, 58 cm: 110 mm, 61 cm: 120 mm |
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| Handle Bar |
Mid handlebar |
Devox Carbon Aero, 80 mm reach, 125 mm drop, ¯31.8 mm, 48 - 54 cm: 400 mm, 56 - 61 cm: 420 mm |
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| Fork |
Steel Brazed Fork |
Felt Aero Road UHC Advanced + TeXtreme carbon fiber monocoque construction, AeroTaper 1.125" - 1.25" carbon fiber steerer tube, integrated crown race, crown and blades. Flat mount disc standard, 12 x 100 mm thru axle |
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| Seatpost |
Extended, Silver (35") |
Felt VariMount Aero Road UHC Advanced + TeXtreme carbon fiber with high-frequency vibration reducing insert, integrated battery holder, 350 mm length*, 0/20 mm offset *Seatpost can be cut to length |
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| Grip |
Push-on Rubber Grips |
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| Crankset |
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Shimano Ultegra R8000, 52/36T, 48 cm: 165 mm, 51 cm: 170 mm, 54 - 56 cm: 172.5 mm, 58 - 61 cm: 175 mm |
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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 11-speed |
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| Shifters |
Brompton 3 Speed Shifter |
Shimano Ultegra Di2 R8070 11-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 |
Prologo Dimension T4.0 |
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| Headset |
Brompton Headset |
FSA integrated sealed cartridge bearings MR121 {870E-RS} Upper bearing and MR168 {970E-RS} lower bearing with integrated aero headset spacers and integrated top cover for use with non-integrated stem |
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| Derailleur Front |
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Shimano Ultegra R8050 Di2 braze-on |
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| Derailleur Rear |
Brompton Chain Pusher |
Shimano Ultegra R8050 Di2 11-speed short cage |
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| Hub Front |
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Reynolds Series 1, straight-pull design, 4 pawl, 24T ratchet, 11-speed, 12 x 142 mm thru axle, Center Lock |
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| Hub Rear |
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Reynolds Series 1, straight-pull design, 12 x 100 mm thru axle, Center Lock |
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| Spoke |
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Sapim Sprint bladed |
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| Cassette |
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Shimano 11-speed, 11-30T |
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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 |
Continental Grand Prix 5000 folding, 700 x 25c |
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| Rear |
Schwalbe Marathon Racer |
Continental Grand Prix 5000 folding, 700 x 25c |
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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 |
Reynolds AR58 DB Custom carbon, tubeless ready, 21 mm inner width, 58 mm depth |
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| Tube |
Schrader Valve |
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| About |
The Brompton A Line is a practical bicycle designed with a focus on utility. Its technical spec Read More |
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| Features |
- 3 Easy to use hub gears
- Folds in 20 seconds |
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| Additional Details |
Folded Size: 25.3' H' x 23'' W x 10.6'' D
Hinge Clamps: Composite hinge clamp levers |
Bar Tape : Felt VelvetGel tape with 3 M reflective base with Felt Bubble-Tech F-Wing bar end plugs
Bottom Bracket : Token BB386 with 24 mm bearings
Seatpost Clamp : Felt Internaloc integrated with titanium bolts
Thru Axle : Front: 12 x 100 x 118, thread: M12 x 1.5P x 13L, Maxle; Rear: 12 x 142 x 161 (161L + 9 head = 170 total), thread: M12 x 1.0P x 18L, Syntace |
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| Accessories |
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- Carbon assembly paste
- Chain plate protector
- Tubeless valve stems
- Aero seatpost slot covers
- Di2 battery charger
- Headset top cover for use with non-integrated stem |
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