Gen2/Rear Brake Actuator

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The rear brake is manipulated by a dirt-bike style pedal around the right footpeg, a common motorcycle configuration.

File:Footpeg-comparison.gif
S and DS foot pedals compared
The rear brake has its own master cylinder behind the rear footpeg on the right.
Pedal Construction
Cast aluminum with a powder coat finish.
On pre-2015 models, the pedal is made from a single piece.
On 2015+ models, the pedal toe actuator is bolted on (M6X20-8.8) and may be replaced or have an S vs DS toe actuator swap.
Rear Brake Switch
The rear brake switch is activated hydraulically by pressure in the rear brake system.
The rear brake switch is built into top banjo bolt.
Rear Brake Pedal
The threaded rod from the brake lever to the master cylinder adjusts lever height.
Rear Brake Pedal Adjustment
The rear brake pedal is adjustable at the clevis.
  1. Remove the pin.
  2. Loosen the actuator shaft locknut above the clevis.
  3. Grip the shaft firmly with (say) long heavy-duty needle-nose pliers.
  4. Rotate the shaft back toward the rear of the bike to lower the pedal foot (or towards the front to raise the pedal foot), repeating as needed.
Rear Brake Pedal Spring
On most models, there is a spring suitable for a dirt bike that is over-designed for a street bike.
There is a kind of spring inside the brake pump, so the external one is just to keep the foot-pedal without rattling.
Suggestion: Remove the rear brake spring or replace it with a lighter spring.
Test the rear brake after doing this.
References
Re: [2016 FXS Rear brake light comes on way too late]
Is there an adjustable pedal brake lever?
Rear Brake Pedal mods