O.S. Max .46AX ABL BB model airplane engine with muffler has a redesigned remote needle holder is separate bracket, not part of backplate. 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. Side exhaust. Newly designed sport muffler with squared-off shape. 40G carburetor. Ball bearing-supported crankshaft. Two-year limited warranty. This product includes one O.S. Max .46AX ABL BB model airplane engine with muffler, A3 glow plug, 2-1/4" (57mm) section of tubing for remote needle, two 3mm x 35mm cap head muffler screws, warranty sheet, decal sheet, and illustrated instruction manual.

Fuel containing 5%-20% nitromethane with at least 16% lubricant