Superlight compact 4-speed gear system fine-tuned for city riding. Covers all contours.
Drivetrain: Brompton 4 speed drivetrain, 163% range
Main Frame: Precision drawn heat-treated steel tubing with hand brazing
Rear frame: Superlight Advance rear frame made from Titanium with a replaceable hanger
Fork: Titanium fork with a threaded headset
Weight: 9.99kg
Folded size: 645mm (H) x 585mm (W) x 270mm (D) (25.3'' x 23'' x 10.6'')
Saddle: Superlight saddle with chromoly rails, carbon reinforced base and lightweight padding.
Seatpost: Brompton Extended Chromoly steel tube - gloss black.
Grips: Superlight lock-on grips with precision ground foam adhered to ultrathin engineered core
Seatclamp: Machined aluminium seat clamp and rear frame clip in anodised matt black finish
Pedals: Brompton Folding left hand and non-folding right-hand pedals
Hinge clamps: Machined aluminium hinge clamp levers and plates anodised matt black finish
Front Wheel: Superlight front wheel - Double wall rim, double-butted spokes and aluminium hub body
Rear Wheel: Double wall rim, double-butted spokes and aluminium hub body
Tyres: Schwalbe ONE Black Tyre
Tubes: Schrader
Chainset: 6061 forged aluminium crank with 50T chainring and integrated chainguard
Bottom Bracket: Square taper bottom bracket
Derailleur: Patent-pending direct mount 4 speed derailleur
Sprockets: 11-13-15-18 Tooth
Shifters: Brompton 4 speed trigger shifter
Chain: Hollow pin Superlight Advance Chain
Chain Tensioner: Advance chain tensioner with replaceable hanger mounting
Brakes: Dual Pivot Calipers
Headset: Superlight headset
Front carrier: Front carrier block adaptor for all types of Brompton luggage
Mudguards: New curved profile with updated mudguard flaps
Lighting: Brompton 500 lumen USB rechargeable front light and Brompton rear battery lamp
Previous Model: Brompton Superlight – H4L-X, M4L-X, S4L- X