The brake master cylinder  converts the physical pressure applied on the brake pedal into hydraulic pressure compressing and moving the liquid through the ducts to the wheel cylinders ( whose pistons expand to push the brake shoes against the drum ) or the brake calipers ( whose pistons push the pads against the disc )
The brake pump can be single-stage or two-stage . It is made of cast iron or aluminium.

Thanks to the pressure of the fluid pumped from the brake master cylinder , the pistons of the brake cylinder widen pushing against the drum the jaws which in turn produce the friction to stop the vehicle . The hydraulic seal of the device is ensured by gaskets mounted on the body of the piston .
It is made of cast iron or anodized aluminium .

The clutch master cylinder converts the physical pressure applied to the clutch pedal into hydraulic pressure compressing and moving the liquid through the ducts until the clutch slave cylinder , which moves the clutch disc in contact with the flywheel to allow gear changes.
It is made of steel, cast iron, aluminium or plastic. All tanks are manufactured in PA 80,100 to provide high levels of resistance to chemical and atmospheric agents .

Due to the pressure of the fluid pumped by the clutch master cylinder , the clutch slave cylinder moves the clutch disc in contact with the flywheel to allow the gear change.
It is made of steel, cast iron , aluminium or plastic.

The braking regulator modulates the pressure applied to the rear brakes as a function of the load that is applied on this axis and the pressure of the front circuit to eliminate the risk of locking of the wheel, allowing to obtain the maximum deceleration.
It is made of cast iron or aluminium.
In addition, the regulators (limiters and compensators) may also be at the cutting point and slope pre-established that do not depend on the load on the vehicle (CRCI)