MAX-65AX 10.63cc 2-Stroke Engine w/ SilencerO. S. MAX 65AX 10. 63cc 2 Stroke Airplane Engine with E 4010A Silencer Designed as a replacement for the long established Max 61FX, the new Max 65AX has all the features of the new AX series, such the same mounting bolt pattern and silencer bolt dimensions, making a direct replacement for most 61 class engines. The real bonus is more power and torque for the same basic external dimensions. Like all the AX series, cooling has been improved by the use