2016 Sea Ray 21 SPX, 2016 Sea Ray 21 SPX is powered by a Mercruiser 4.3L 220 HP and bravo one drive. The boat is equipped with the following options: Rally red hull with white side, red speed graphics, Captain's package, Stainless steel component upgrade, bimini top, tandem axle trailer and much more! Four optional functional and convenience packages: Captain's; All Sport; Elevation & Select