Copper .040" exhaust gasket.
Suits Zenoah and Chung Yang RC engines.
Fits stock mufflers and aftermarket pipes.
This heavy-duty gasket is reusable and helps resist leaking and blowout.
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The gasket is well made and with porting jobs on the cylinder head you can actually shape the opening to match the port without any trouble at all. Good product all round. Would recommend to anyone with ported exhaust outlets!