* Largest in terms of displacement? Then it would likely be a large marine engine, like the Wärtsilä-Sulzer RTA96-C, a massive 2-stroke diesel engine with a displacement of 25,480 liters.
* Largest in terms of power output? Again, large marine engines would likely be contenders, as they are designed for maximum power.
* Largest in terms of physical size? This would depend on the specific application and design.
Here are some contenders for "largest" 2-stroke gas engines:
* Wärtsilä-Sulzer RTA96-C: This is a massive 2-stroke diesel engine, but it can be modified to run on gas.
* Large marine engines: Many shipyards produce powerful 2-stroke gas engines for use in ships.
* Industrial engines: Companies like GE and Caterpillar produce large 2-stroke gas engines for industrial applications like power generation.
To get a more precise answer, you need to clarify what you mean by "largest".
Please provide more information about your specific interest, and I can try to give you a better answer.
