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Athena Big Bore Gasket Kit.

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Purchased an athena big bore kit for my 2004 crf450R. Can someone please identify the copper ring and rubber o ring that come with this kit?. It appears the copper ring is for exhaust header but im not sure and the search function has yielded no luck.. Any Ideas?

Thanks Friends

Edited by Ssecca

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The small oring is for the early cam chain tensioner cover bolt.

The larger one is for the coolant elbow at the front of the head

The copper ring should be for the exhaust.See if the exhaust ring even fits into the port,

I had some recent problems with Athena kits.

Edited by seehogs

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Thanks For Your Time!! I really Appreciate it. What problems have you had??

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