Drivetrain |
Brompton 4 speed drivetrain, 163% range |
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Frame |
Main Frame: Precision drawn heat-treated steel tubing with hand brazing and selected auto-brazed joints
Rear Frame: Superlight Advance rear frame made from Titanium with a replaceable hanger, redesigned suspension block and new 54mm roller wheels |
Folding, 4130 CrMo Tubing w/Carrier Bosses |
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Stem |
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Captain: Threadless 3D Forged, 10D, 25.4 mm, Stoker: Aluminum, 35 Degree Adjustable |
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Handle Bar |
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Aluminum Riser |
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Fork |
Superlight Titanium fork with a threaded headset |
Full CrMo Unicrown, w/Fender Bosses |
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Seatpost |
Brompton Standard Chromoly steel tube – gloss black. Suitable for maximum inside leg 33″/83cm |
Aluminum 2-bolt FT, Aluminum Suspension RR |
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Grip |
Superlight lock-on grips with precision ground lightweight foam adhered to ultrathin engineered core weighing just 42g per pair |
Velo Ergo Triple Density |
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Crankset |
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Drive Line 3-pc Aluminum Forged, 52/42/30T |
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Pedals |
Brompton Folding left hand and non-folding right-hand pedals |
VP VPE-527 Aluminum Platform w/DU Bearing |
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Chain |
Hollow pin Superlight Advance Chain |
KMC Z9 |
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Shifters |
Brompton 4 speed trigger shifter |
Shimano Sora Trigger |
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Gear |
4-speed gear system |
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Saddle |
Fizik Aliante R7 – a comfortable saddle with lightweight performance from its Composite Carbon Nylon shell |
KHS Sport |
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Headset |
Brompton Superlight headset |
Aluminum Threaded 1-1/8” |
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Derailleur Front |
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MicroShift FD-R539 Braze On |
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Derailleur Rear |
Patent-pending direct mount 4 speed derailleur |
Shimano 105 RD-R5701 |
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Hub Front |
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Formula Aluminum QR, Cassette |
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Hub Rear |
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Formula Aluminum QR |
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Spoke |
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14G Stainless, 32 x 32 |
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Cassette |
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SRAM PG-950, 11-28T, 9-Speed |
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Chainrings |
6061 forged aluminium crank with 50T chainring and integrated chainguard |
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Sprocket |
11-13-15-18 Tooth |
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Bottom Bracket |
Square taper bottom bracket |
ISIS Cartridge Bearing |
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