A spring for friction pads associable with a caliper of a disc brake for elastically biasing the friction pads away from a brake disc of the disc brake, said spring comprising an elongated plate bent so as to form: - a fixing stretch, - a resting stretch, opposite to the fixing stretch, and - a return stretch formed between the fixing stretch and the resting stretch, wherein the return stretch extends from a narrowing region, in which the fixing stretch and the resting stretch are locally approximated to each other at least partially, to an upper apical region of the spring, characterised in that the fixing stretch forms a fixing seat for a clamping fixation of the spring to a corresponding fixing portion of the caliper, wherein the resting stretch forms: - a plate-shaped contact portion for freely abutting the spring against a corresponding contact surface of the friction pad, and - a plate-shaped intermediate portion, extending between the narrowing region and the contact portion, - a bending edge formed between the contact portion and the intermediate portion, wherein the contact portion is bent with respect to the intermediate portion so that, when the spring is not deformed: - the intermediate portion extends, starting from the narrowing region, in a diverging manner with respect to the fixing stretch with a first divergence angle, and - the plate-shaped contact portion extends, starting from the bending edge, in a diverging manner with respect to the fixing stretch with a second divergence angle, - said first divergence angle and second divergence angle being of different size, and - the bending edge protrudes in the same extension direction as the fixing portion. - a fixing stretch, - a resting stretch, opposite to the fixing stretch, and - a return stretch formed between the fixing stretch and the resting stretch, wherein the return stretch extends from a narrowing region, in which the fixing stretch and the resting stretch are locally approximated to each other at least partially, to an upper apical region of the spring, the fixing stretch forms a fixing seat for a clamping fixation of the spring to a corresponding fixing portion of the caliper, wherein the resting stretch forms: - a plate-shaped contact portion for freely abutting the spring against a corresponding contact surface of the friction pad, and - a plate-shaped intermediate portion, extending between the narrowing region and the contact portion, - a bending edge formed between the contact portion and the intermediate portion, - a plate-shaped contact portion for freely abutting the spring against a corresponding contact surface of the friction pad, and - a plate-shaped intermediate portion, extending between the narrowing region and the contact portion, - a bending edge formed between the contact portion and the intermediate portion, wherein the contact portion is bent with respect to the intermediate portion so that, when the spring is not deformed: - the intermediate portion extends, starting from the narrowing region, in a diverging manner with respect to the fixing stretch with a first divergence angle, and - the plate-shaped contact portion extends, starting from the bending edge, in a diverging manner with respect to the fixing stretch with a second divergence angle, - said first divergence angle and second divergence angle being of different size, and - the bending edge protrudes in the same extension direction as the fixing portion. - the intermediate portion extends, starting from the narrowing region, in a diverging manner with respect to the fixing stretch with a first divergence angle, and - the plate-shaped contact portion extends, starting from the bending edge, in a diverging manner with respect to the fixing stretch with a second divergence angle, - said first divergence angle and second divergence angle being of different size, and - the bending edge protrudes in the same extension direction as the fixing portion.