K11 exhaust inlet?

I can tell you what a janspeed size would be when I get home...

I think it's 2"1/2 but don't quote me on that just yet ;)
 
Sorry fella I was at CCNA course till late last night.

It's written on my hand for tonight ;)

Right the inside diameter is 1.8"

Remeber thats for a janspeed system which I beleive is same as OEM setup. Hope that helps :)
 
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