You are looking at a new rear brake lever extension for the air-cooled R1200RT and R1150RT. Made out of 6061 aluminum and then clear anodized, this extension is approx 2.5" long and installs with a set screw.
This extender comes in Silver, Black shown only for display purpose.
Verholen R1200RT (06-13)|R1150RT Brake Pedal Extension
Produced by Verholen of Germany