Fitted with a supercharger and intercooler, the liquid-cooled 1,498 cm3, In-line 4-cylinder
marine engine that propels the ULTRA 310 Series models forward with an exhilarating
rush of acceleration produces an output much greater than a normally aspirated engine of the same displacement. This is
due in large part to the use of a roots type TVS supercharger, which generates boost even at low rpm to ensure powerful
acceleration, right from idle. A number of changes to increase engine efficiency – by reducing mechanical loss, and through
other improvements – elevate engine output to 221 kW (300 PS).