O.S. Engine OS-13941 21XM Version II Off-Road Performance Engine  [OS-13941]

Race-Ready Design from O.S. Engine OS-13941

The O.S. Engine OS-13941 brings a compact, race-focused design to RC car and buggy platforms. It is built to provide steady power and controllable response under competitive conditions.

Engine Layout for Accurate Power Delivery

This engine has a 3.46cc displacement and produces 1.3ps at 25,000 RPM, with a 16.6mm bore and 16.0mm stroke that support efficient combustion and predictable throttle action.

Usable Power Across a Wide RPM Band

Operating between 3,000 and 25,000 RPM, the OS-13941 adapts to tight technical sections and fast straights, delivering usable torque and top-end speed when needed.

Balanced Weight for Better Chassis Response

Weighing 670g, the OS-13941 keeps the centre of gravity low to aid handling and acceleration without sacrificing ruggedness for everyday running.

For pilots wanting a compact, controllable engine with strong top-end potential, the O.S. Engine OS-13941 is a practical choice for racing and advanced hobby use.