The invention relates principally to a rear axle (1) of a motor vehicle comprising a rear cross-member (2) provided with a body (3) to which are connected a first and a second half-shaft (5) as well as a silencer (21) intended to limit a noise level of exhaust gases circulating in an exhaust line (25), characterized in that said silencer (21) is positioned inside a hollow volume (20) delimited by said body (3) of said rear cross-member (2).
