B2101 Speed Head Gasket Set by O.S.

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Frederick

Frederick, MD

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O.S.
OSM2A204160
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This product was added to our catalog on February 23, 2015.

This is a replacement O.S. Head Gasket Set. 

These shims go between the head button and the top of the cylinder sleeve and can be used to adjust and fine tune the compression (deck height) of the engine. In general the higher the nitro percentage of the fuel you run, the more head shims you should put in your engine. Please consult the instructions that came with your engine for details about how much your engine should be shimmed!