Kawasaki FX651V-S00-S vertical OHV 4-cycle V-Twin engine is 726cc and puts out 20.5 HP (maximum horsepower). This FX651V has a 1-1/8″ x 108.8mm crankshaft, an electric shift type starter, a heavy duty canister air filter and a charging coil. A muffler is not included with this engine. With hemispherical combustion chambers and overhead V-valve technology, Kawasaki FX Series engines provide reliable, commercial-grade strength for outstanding power and smooth operation. Ideal for riding mowers, heavy duty industrial equipment and construction equipment. Buyer protection package provides a three-year commercial engine warranty. 50-State CARB Compliant. All engines purchased from us ship for free and are foam packed for added protection during transit.