Genuine Beta base gasket as used on 125cc to 300cc 2 stroke models from 2000 onwards.
Different thickness base gasket are available depending on what cc your bike is or if you would like to raise or lower the compression of the bike.
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Genuine Beta o-ring. This o-ring seals the two halves of the cylinder head together around the spark plug area.
Fits Beta Evo 125cc 250cc 290cc 300cc 2T models from 2009 onwards...