Hydraulic switch stop with M10x1,1 bolt (Italian / European master cylinders).
Part that must be used to still have the stop light function when OEM rearsets are replaced with a new one that don’t not have the chance of adding the original switch stop.
It can be used also on brake and clutch master cylinders that are not supplied of OEM switch.
Supplied with copper washer.

Extreme Components
Only racing use.