| 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 |
Tectonic T1, aluminum biaxial hydroformed and butted, BMX Race geometry, 86mm press fit BB shell, internal cable routing, 3D Forged, 10 mm dropout, tapered headtube |
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| Stem |
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Mongoose, threadless top load, 50 mm |
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| Handle Bar |
Mid handlebar |
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| Fork |
Steel Brazed Fork |
4130 chromoly |
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| Seatpost |
Extended, Silver (35") |
Aluminum, 250 mm, 27.2 mm |
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| Grip |
Push-on Rubber Grips |
Mongoose Gate, lock-on, 140 mm |
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| Crankset |
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Samox 2-piece, aluminum 175 mm, 24 mm hollow spindle, 4-arm with 42T AL chainring |
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| Pedals |
Non-folding Composite Pedals |
Mongoose, nylon |
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| Chain |
6061 forged aluminium crank with 44T chainring and integrated chainguard |
KMC S1 |
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| Shifters |
Brompton 3 Speed Shifter |
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| Saddle |
A Line saddle with black rails 147mm width
Composite seat clamp and rear frame clip in matt black finish |
Mongoose Unifier Pro, 1 piece rails |
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| Headset |
Brompton Headset |
Threadless, 1-1/8” sealed integrated, taper compatible |
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| Derailleur Rear |
Brompton Chain Pusher |
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| Hub Front |
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Aluminum, sealed-bearing cassette, 3/8 in axle, 36H |
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| Hub Rear |
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Aluminum, sealed-bearing, 3/8 in bolt, 32H |
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| Spoke |
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14G, steel, black |
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| Sprocket |
13 Tooth |
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| Bottom Bracket |
Square taper bottom bracket |
BB86 press-fit sealed bearing |
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| Front |
Schwalbe Marathon Racer |
Arisun XLR8, 20 in x 1.95 in |
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| Rear |
Schwalbe Marathon Racer |
Arisun XLR8, 20 in x 1.75 in rear, wire bead |
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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 |
Xposure Infinity-XD, aluminum double wall, 30 mm ID, 32H front, 36H rear |
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| Tube |
Schrader Valve |
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