does anyone know who makes a downpipe for hx40 over s475 compounds?? or any way to piece something togather to fit?? i have the hx40 with 4" ss downpipe and i dont know what ill need for my 475 as a bottom charger!! any help would be greatly appreciated!! thanks in advance.. scott

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no one knows anything??? thats odd

 

source should have something I believe the hx40 uses same setup as a s300

 

i need it for the 475 i think it may be 5"

 

oh yeah that's usually custom setup. depending on how and where it's mounted. yes it is a 5"

 

racepartsolutions.com has s300 and s400 flanges. where you go from there is beyond me because as you meantioned it's 5"

 

well i ordered it today and i went with the 4" s475 housing soo i can just mate it to my 4" exhaust

 

When I did my HX35 over S400, I built my own down pipe. I already had 5", so all I needed was the lip flange and elbows. Here is what I made.