- Stock #420634 - A stunning Sea Ray SLX 350 Outboard! Twin 400 Mercury Verados! Super low hours! Loaded with upgrades! This 2020 Sea Ray SLX 350 Outboard model is nothing short of spectacular with plenty of room for friends and family. Powered by a pair of 400 HP Mercury Verado supercharged outboards, this boat will hit 55 miles an hour! With a host of amenities and multiple seating areas, this truly is one of the best boats for entertaining that Sea Ray has made. Cockpit refrigerator, sink and grill keep the party going all day! Below decks there is a cabin that sleeps two people comfo... read more