Superior Air Parts XP-320

The Superior Air Parts XP-320 is an aircraft engine, designed and produced by Superior Air Parts of Coppell, Texas, United States for use in homebuilt aircraft.

The company is owned by the Chinese company Superior Aviation Beijing, which is 60% owned by Chairman Cheng Shenzong and 40% owned by Beijing E-Town, an economic development agency of the municipal government of Beijing.

Design and development
The engine is a four-cylinder four-stroke, horizontally-opposed, 320 cuin displacement, air-cooled, direct-drive, gasoline engine design. It produces 160 hp standard, although 150 hp and 165 hp versions are available. It is available in both carburetor and fuel injected versions. Compression ratios of 8.5:1, 7:1 and 9:1 are available.

The engine is not type certified and is therefore intended for homebuilt aircraft.