2011 MasterCraft X-15 The MasterCraft X-15 isn’t just designed for showing everyone how it’s done, it’s designed for showing everyone how everything is done. With an Ilmor engine for heart-pounding power and performance, it features a traditional bow, spacious 100-inch beam, extensive freeboard, wraparound seating and swiveling board racks. So when it comes to skiing, surfing, tubing and wakeboarding, your X-15 does it all with world-class style and comfort.