O.S. Engine .25AX ABL Model airplane engine with E-3080 muffler. Ideally suited to a variety of R/C aircraft including trainer, sport types.

Same mounting dimensions as previous O.S. .25 size engines. Advanced Bi-Metallic Liner. This process uses a double layer of plating material rather than one thick layer. This helps the metal to bond to the cylinder and is more durable. Also, the plating process is more consistent, resulting in a more precise fit between piston and sleeve for better compression, longer life. Newly designed E-3080 Power Box muffler generates mild and pleasant sound and is constructed with an O-ring between the front rear body to prevent oil leaking and is fully positionable. 21L carburetor with needle valve angled toward rear of engine for safer adjustments. Ball bearing-supported crankshaft. Two-year limited warranty.