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OS Motors Piston Ring FS-120 III (OS Motors OSMG7825 | OSMG7825)
OS Motors Piston Ring FS-120 III

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Model: OS Motors OSMG7825
Dist. #: OSMG7825   SKU: OSMG7825

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Price:  $43.89

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Updated on Sep 28, 2025 04:05:25 PM

Piston Ring FS-120 III...
This is a replacement piston ring for an O.S. FS120 Exceed III four-stroke
plane engine.

INCLUDES:
One steel piston ring - this part twists around the top of the piston
and seals the gap between the piston and cylinder liner. This
makes sure that the engine has enough compression to run.

Approx piston ring diameter: 31mm
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