OS Max-75AX is a 2-stroke high performance engine with more power than its precedessor-OS Max-61FX. Better still, you can fit the OS Max-75AX in your existing .61 model as this engine has the same mounting specification as the OS Max-61FX.
Fits the same mount and bolt pattern as the 61FX.
The angular head design looks great and significantly increases surface area for better cooling.
A diagonally-placed needle means no remote needle valve is needed and your safety is also considered when designing the carburettor.
Includes the new "Power Box" muffler, designed with more volume for increased power while still being very compact.