This high-performance 2-stroke engine from O.S. is a great choice for RC model airplane enthusiasts who want to take their flying experience to the next level. With its nitro and glow fuel compatibility, this engine is designed to provide optimal power and performance for your airplane.

The ringed design ensures that the engine stays securely in place, while the .91 size makes it a great fit for many different airplane models. Whether you're a seasoned pilot or just starting out, this O.S. MAX FX 91 R/C MODEL AIRPLANE engine is sure to give you the power and performance you need to succeed in the skies.