Brompton Advance 4-speed Integrated Shifter

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.