MAR.CO R-Evolution X36 RIB Twin Mercury 450R Karel Overlaet, RIB Advocate The first R-X36 RIB powered by twin 450hp Mercury Racing is also the first MAR.CO ever to be delivered in the USA (Miami, Florida). Others Also Read...MAR.CO R-Evolution X36All Black MAR.CO R-Evolution X36 RIBMAR.CO R-EVOLUTION X36 Powered 2X Verado 600HPMAR.CO R-EVOLUTION R-26 Close-Up