2011 Yosh rs-4 exhaust

I have a 2011 kx250f that I just bought the stainless/aluminum Yosh rs-4 slip-on exhaust for. Problem is, now I can't find anywhere that I can buy just the header for it. Can I buy any header for it and it work? I thought about buying the FMF megabomb header for it, will it fit fine, and would anyone have any idea how that would work performance wise? Any help would be greatly appreciated!

Edited by motomandan35

I know you already bought the muffler but I'd be willing to sell my whole system for 100 plus shipping, I can send pics if interested

Could you PM me those pics kawi rider 13. I am interested!

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