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