The new O.S. GT-33 has an electric ignition system for fast, easy starting and accepts LiFe, LiPo, NiCd and NiMH power. The rear-mounted carb and intake simplify mounting and installation. The O.S. E-5030 muffler effectively controls exhaust noise without compromising performance. The GT-33 costs $419.99 and weighs in at 43.39 ounces (w/ muffler and ignition system).