An assembly (1) for a disc brake caliper (100), in which, when said caliper (101) is arranged astride a disc (3) of a disc brake (100) having a defined rotation axis (C), said assembly (1) defines an axial direction (X-X) parallel to said rotation axis (C), a radial direction (R-R) orthogonal to said axial direction (X-X) and a tangential or circumferential direction (T-T) orthogonal to both the axial direction (X-X) and the radial direction (R-R), said assembly (1) comprises: a first pad (10) comprising a friction material (12), defining a friction surface, and a support plate (13) which supports said friction material (12) and is adapted to release the braking action onto the caliper (101) of the disc brake (100), in which said support plate (13) comprises at least one lateral projection (14) which extends in a direction substantially coplanar to the plate (13) and is placed at an end of the support plate (13), and in which said at least one lateral projection (14) is adapted to be accommodated in a pocket (19) obtained in the body of the caliper (101); said assembly (1) further comprising at least one spring (30), in which said spring (30) is connected to said lateral projection (14) of said support plate (13), and in which said spring (30) being adapted to be accommodated in a seat (34) obtained in the body of the caliper (101) at said pocket (19), and in which said spring (30) is adapted to be inserted in said seat (34) to be fastened in an undercut manner against said undercut surface (34) to bias said pad (10) in the axial direction (X-X).