Ultima’s® 49 state EPA certified engines are offered in 5 popular displacements. They have been designed to provide our customers with a U.S.A. built performance engine that is priced to be the best value on the market, while still providing compliance to EPA regulations. These EPA Engines share the same characteristics as our C-Series engines except for, and not limited to, cam shaft, carburetor settings and pre-programmed ignition system. All castings are made from C355 aluminum, a common military alloy known for its stability over multiple heat cycles. The engine components are machined on state of the art CNC equipment for guaranteed dimensional accuracy and repeatability. All of our engines are dynamically balanced using proprietary methods to provide the smoothest running engines on the market.