Colour ways: Midnight Black or Storm Grey

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: 9.89kg

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 Chromoly steel with Chrome finish. 3 lengths available as option

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 - Lightweight rim, double-butted spokes and aluminium hub body

Rear Wheel: Lightweight rim, double-butted spokes and aluminium hub body

Tyres: Schwalbe Marathon Racer

Tubes: Presta valve

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: Front and rear reflectors as standard. Brompton 500 lumen USB rechargeable front light and Brompton rear battery lamp available as option separately

Previous Model: Brompton Superlight – H4L-X, M4L-X, S4L- X