The BX155-V4 engine is considered a power house in the towing sector. Models with a take-off weight of up to 25kg can also tow gliders of up to 22kg. They have achieved top scores in noise measurements, when used with the optional silencer. The engine can be started by hand, or using the available electric starter. The engine, with its power and quiet running, is also suitable for classic aerobatics. Due to its narrow dimensions, it is suitable for a wide range of beautiful models.