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Mugen Twinloop Exhaust EP3

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103
Does anyone know the size of the donut gasket that sits between the mid pipe and the back box?

Seems ones I try are too thick.... and not allowing a full seal between the two joints. Diameter is correct as fits on the mid pipe flange just not in the back box flange....




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You probably bought the one that goes onto the 421 manifold. gasket to mid-pipe should be 57mm. I did this a few months ago. Try this:

https://www.ebay.co.uk/itm/HONDA-CI...6:g:j7wAAOSwzUxbuz0W:rk:1:pf:1&frcectupt=true


Yeah it’s bigger than 57mn I need. It’s for joint between the mid pipe and the backbox.

Mid pipe flange is 2.5”
Backbox is 3”

But there doesn’t seem to be an appropriate sized donut gasket I can find anywhere for sale

All the ones I try are either too small on the mid pipe side but fit backbox or vice versa


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It may be the 75mm then. But im.sure thats for the manifold. Ive used the 57mm with no issues.
 
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