Brompton 4 speed derailleur gear shifter with integrated brake lever - Black
As seen on P/T Line left side handlebar for New Advanced Derailleur 4 Speed Brompton
These new shifters were introduced on 2021 model P Line and 2022 T Line 4 speed advanced derailleur
Pushing it down with your thumb will shift into an easier gear and clicking the lever upwards with the back of the thumb will shift into a harder gear.
Ideal also for A/C Line upgrade to external cogs 4 speed (X3+1 setup : X3 Unibody Cog Set + 1 extra large gear and upcoming X4 Unibody Cog Set 11/13/17/21t for stock wheelset)
Note: This shifter is not compatible with the old (pre-2017) high rise M-type and H-type handlebars
Optional Standalone fixture for Intergrated Shifter (H&H), so you can pair the stock shifter to your personal Brake Lever.