Wolverine RMAX4 1000/X4 Overhead Speaker Expansion Kit by SSV WorksIncrease the performance of your Yamaha Genuine Audio Kit with these Overhead Speakers. Mounted in a custom tuned speaker pod that is designed to maximize the audio quality and to fit the Wolverine perfectly, these pods are a direct plug into the Yamaha Genuine audio system. Two loaded 6. 5 Marine pod speakers Rugged, custom designed pods Plug and play wiring kit Great addition to the RMAX4 1000 factory audio kit Specifically designed with the Yamaha