Mercury - Bravo I XS Pro Racing Propeller - 4-Blade - 150 to 300 HP Two Stroke - 15.25 Dia. - 31.5 Pitch - 48-8M0100109. The Pro Finished Bravo I XS features the same shortened barrel as the Bravo I FS, but has (8) PVS vent holes for optimal two-stroke planing performance.. The four blades support staying on plane during slow switchback turns, great rough water handling and excellent mid-range acceleration.. Applications include lightweight to heavy walleye, bass , flats and some ultra-high-speed bass boats.. The Mercury Bravo I XS Pro fits two-stoke Mercury outboard models, 150 to 300 HP.