Drivetrain |
Brompton 4 speed drivetrain, 163% range |
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Speed |
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21 |
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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 |
KELLYS Aluminium alloy MTB 26 |
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Stem |
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KALLOY - diam 28.6 mm / length 60 mm |
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Handle Bar |
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steel RiseBar - diam 25.4 mm / width 580 mm |
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Fork |
Superlight Titanium fork with a threaded headset |
SR SUNTOUR M3010 (26), 63 mm, coil spring |
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Seatpost |
Brompton Standard Chromoly steel tube – gloss black. Suitable for maximum inside leg 33″/83cm |
KALLOY - diam 27.2mm / length 300mm |
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Grip |
Superlight lock-on grips with precision ground lightweight foam adhered to ultrathin engineered core weighing just 42g per pair |
Kraton 2Density |
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Crankset |
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PROWHEEL (42x34x24T) - length 152 mm |
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Pedals |
Brompton Folding left hand and non-folding right-hand pedals |
Plastic |
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Chain |
Hollow pin Superlight Advance Chain |
KMC Z7 (106 links) |
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Shifters |
Brompton 4 speed trigger shifter |
SHIMANO ST-EF41-7 EZ-fire Plus |
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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 |
KLS Junior |
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Headset |
Brompton Superlight headset |
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Derailleur Front |
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SHIMANO TY500 (31.8 mm) |
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Derailleur Rear |
Patent-pending direct mount 4 speed derailleur |
SHIMANO TY300 (direct mount) |
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Hub Front |
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Alloy / SHIMANO TY500-7 (32 holes) |
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Hub Rear |
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Alloy / SHIMANO TY500-7 (32 holes) |
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Spoke |
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Steel Black |
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Cassette |
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SHIMANO CS-HG200-7 (12-32T) |
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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 |
SHIMANO CS-HG200-7 (12-32T) |
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Bottom Bracket |
Square taper bottom bracket |
Cartridge (120 mm) |
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