Bravo One XR Sport Master

The gearcase is the one component of a high-performance sterndrive or outboard that is always in the water, and thus subject to drag, an important factor in hydrodynamics.

Propellers are complicated, and levels of understanding vary widely. We revisit the basics and then dive deeper on propeller form, fit and function.

Mercury Racing announce the release of six new 4.6L V8 300R FourStroke outboard models featuring a 1.60:1 gear ratio Sport Master gearcase.