Mercury Racing 520 Sterndrive

Mercury Racing 520 Sterndrive

The engine was developed to provide recreational boaters a low-cost option for gaining access to Mercury Racing’s exclusive group of high-performance sterndrive propulsion systems.

Mercury Racing 520 Sterndrive

Mercury Racing 520 Sterndrive

The 520 shares the same CNC machined cylinder block used on its MAG HO cousin and Mercury Racing’s 502 cubic-inch-based sterndrive family. Mercury Racing enhanced the 520’s power and torque by increasing the cylinder bore size for an additional 21 cubic inches of displacement to 523-C.I.D. (8.6 L).

Mercury Racing 520 Sterndrive