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OS FS56-a 4-Stroke Engine

Availability:

Available on backorder


A big performance boost for 40-size planes!

$600.00

Available on backorder

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Ushering in a new era in O.S. 4-stroke technology: the FS56-a. It’s the first in the alpha series, with the latest advancements for boosting your plane’s performance.

Mounts with no-mod ease in the same space as the 52FS.
In addition to less noise, the muffler features a multi-positional manifold with a rubber that helps prevent oil leakage.
A newly designed lubrication system eliminates the need for crankcase ventilation.
The 40NA carburetor is equipped with a venturi that reduces the chance of fuel leaking out onto the cowl, while also creating more positive air/fuel flow.