Los 40 Los Mochis (formerly known as Los 40 Principales Los Mochis until 2016) is a radio station belonging to the Los 40 network of the Radiorama group, operated by Grupo Chavez Radio in Sinaloa. It broadcasts from Los Mochis, Sinaloa, on the frequency 104.3 FM.

The station follows the editorial and programming line of the network, offering a proposal focused on a young audience that mixes various musical spaces with current hits, countdown shows, and entertainment programs.

In addition, it offers the option to listen to its programming live via the internet, through the official page of Grupo Chavez Radio.