We’re happy to tell engine builder competitors that Flowmaster will once again be the official muffler for the 2013 AMSOIL Engine Masters Challenge. The Outlaw Series race muffler is Flowmasters smallest and lightest race muffler to date, and can easily handle the power output of the AEMC’s top competitors. The Outlaw muffler generally produces more power than open headers, while taking the “edge” off that open-header sound. These race mufflers are designed to be used at race tracks requiring mufflers, and are available in two compact lengths and tubing sizes, including 3.00-, 3.50-, 4.00-, and for the AMSOIL Engine Masters Challenge, a 5.00-inch diameter. The Flowmaster Outlaw spec muffler for the AEMC will ensure that competitors will encounter zero flow restrictions, while maximizing available torque within the 3,000-7,000 rpm scoring range of the competition.