OS FS 91 Single Cylinder

OS FS 91 Single Cylinder Engine

We are pleased to offer a wide variety of conversion parts and accessories for the OS FS 91 Single Cylinder Engine.

O.S. developed the Surpass Series of 4-stroke engines for discerning fliers who demand more power. Able to swing larger props and supply more usable horsepower, Surpass 4-strokes provide the best performance for your plane, regardless of scale or flying style.

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  • Specifications:

    Displacement: 14.95cc/.912cu.in.

    Practical rpm: 2,000 - 12,000

    Recommended Prop Sizes: 13x9,14x7,15x6,16x6

  • About the Brand:

    OS Engines offers a diverse range of products tailored to meet the needs of hobbyists and professionals. Each OS engine is built with advanced technology, ensuring optimal fuel efficiency, extended durability, and smooth operation in even the most demanding conditions.

  • Engine Servicing

    We can also offer our inhouse services in fitting these parts to your engine (Please visit our engine servicing page here for more info)

All Conversion Parts

1 8

Recommended Propellers for This Engine:

1 5

Something Not Right?

If you have any questions on this engine or queries about engine conversions and upgrades in general, please contact us and we'll get in touch promptly!