Whether you fly for fun or trophies, YS engines are the only choice for performance-minded modelers.  Every YS engine is designed, built and manufactured to provide the most power possible.

This YS Helicopter engine, the 56SR, fits in the same mount as our highly succesful 50ST, and gives you even higher performance with better cooling thanks to the new, bigger cylinder head design.

YS engines are huge horsepower in a small package!