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 |
TIG-Welded Hi-Tensile Steel, Internal Cables |
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Stem |
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Aluminum Quill, 25 Degree |
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Handle Bar |
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Aluminum, 100 mm rise, 660 mm |
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Fork |
Superlight Titanium fork with a threaded headset |
Hi-Tensile Unicrown Straight Blades |
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Seatpost |
Brompton Standard Chromoly steel tube – gloss black. Suitable for maximum inside leg 33″/83cm |
Aluminum Suspension, 25.4 mm |
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Grip |
Superlight lock-on grips with precision ground lightweight foam adhered to ultrathin engineered core weighing just 42g per pair |
Comfort Kraton |
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Crankset |
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Shimano FC-TY501, 48/38/28T w/CG, S-M:170, L-XXXL:175 |
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Pedals |
Brompton Folding left hand and non-folding right-hand pedals |
Nylon Platform |
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Chain |
Hollow pin Superlight Advance Chain |
KMC Z8.3 |
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Shifters |
Brompton 4 speed trigger shifter |
Shimano Revo RS36 |
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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 |
DDK Wide Comfort, Memory Foam w/Elastomer Spring |
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Headset |
Brompton Superlight headset |
1-1/8” Threaded, Zero Stack w/Aluminum Conical Top Cap |
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Derailleur Front |
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Shimano Tourney, TY510, 28.6 mm |
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Derailleur Rear |
Patent-pending direct mount 4 speed derailleur |
Shimano Tourney, RD-TY300D |
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Hub Front |
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Aluminum, QR, Rubber Seal |
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Hub Rear |
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Aluminum, QR, Rubber Seal |
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Spoke |
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14G Stainless, 32 x 32 |
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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 |
Cartridge Bearing |
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