A caliper body (1) for a disc brake, defining a first and a second braking surface (41,42) said caliper body comprising a first and a second half- caliper (2,3), which are obtained by casting without machining and are suitable for being connected together; said first half- caliper (2) comprising a wheel-side elongated portion (5), extending in a tangential direction, and at least one first projecting portion (11), projecting in an axial direction provided with a first contact surface (41); said second half -caliper (3) comprising a vehicle-side elongated portion (6), extending in a tangential direction, an attachment portion for being connected to a support for the caliper and at least one second projecting portion (12), projecting in an axial direction provided with a second contact surface (41 '); said projecting portions forming a bridge astride of the disc (40)); in which the first projecting portion extends farther in the axial direction than the second projecting portion so that a half -caliper joining plane (P) is axially closer to the vehicle- side elongated portion than to the wheel side elongated portion (5).