Caliper for a brake of a vehicle

A caliper for a brake of a vehicle, capable of an effective amplified action, including a caliper body intended to be mounted astride of a disc able to rotate about a rotation axis (X-X), a first and a second pad supported by the caliper body on opposite sides with respect to the disc, and respectively having a first and second coating of friction material facing one another, at least one of said pads being mounted onto the caliper body through a respective mechanism suitable for generating a wedging of at least one pad between said mechanism and the disc , causing locking between the disc and at least one pad.