Brompton Advance 4-speed IntegratedShifter

Brompton Advance 4-speed Shifter

For 4-speed and 12-speed Brompton folding bikes

The gear shifter uses a self-returning mechanism to change between the four gears on the Brompton 4-speed derailleur, pushing down changes to an easier gear, and up to a harder gear

The gear shifter uses a 1:1 pull ratio (if you are interested)

You should pedal while changing gear when changing gear using this shifter

Note - this shifter is not compatible with pre-2017 M/H handle bars and is only compatible with the 4-speed / 12-speed gear mechanism

Tools required for removal:

• Cassette lockring tool
• Chain whip

Tools required for installation:

• 3mm Allen key
• 4mm Allen key
• Torque wrench 

The shifter mounts onto the brake lever via two M3 screws that need to be done up to 0.6Nm - do not over tighten! 
There is a spacer between the brake lever and the shifter, this is vital to ensure clearance

The 4-speed shifter was introduced in 2022