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Nov 19, 2005, 02:29 PM
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Pskov91's Avatar

OS 1.20 Side mount Slimline Pitts muffler question

anyone know what size o-ring I need for the Slimline Pitts side mount muffler for an OS 1.20.

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Nov 21, 2005, 10:20 AM
S.A.D. member
ivanc's Avatar
Do you mean gasket instead of o-ring? If you mean a gasket between the muffler and the engine, then you do not need it - bolt the muffler straight to the engine using locktite on the bolt threads. Don't be alarmed if there's a small leak - it's better than replacing burnt gaskets and losing the muffler due to it.
Nov 21, 2005, 11:32 AM
Registered User
Pskov91's Avatar
yeah it didnt make much sense to me to need it because the stock muffler doesnt use one

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