4-inch downpipe

[olred07]

What exhaust systems offer a 4-inch downpipe, and do you have any problems installing it on a 07 F-350 4x4?

 

[bigastrk]

I know that some have problems with the 4" DP rubbing on the up pipes. I have a 4 in mine and it doesn't rub. You just have to be careful with it. For the life of me though I can't recall who my kit is from. It was MBRP but they have a 3.5" DP and now its someone else but I don't remember who.

 

[Trusted]

Magnaflow's 4" shouldn't rub. We run them on a few trucks without any issues.

 

[jdc753]

Magnaflow's 4" shouldn't rub. We run them on a few trucks without any issues.

this is what I have Magnaflow 5" kit with 4" downpipe.

The pipe has a small flat spot right where it passes by the bellows, wasn't really too hard to line up right, but is definitely TIGHT up there. Only trouble I had with mine was lining up the rest of the downpipe pieces so that they wouldn't rub on the bolts for the trans crossmember.

I was very pleased with the kit, plus it came with all the parts to use or delete the cat.

 

[BIG JUICE]

I have a 4 inch flo pro on mine and it rubs the lift shackle. they could have done a better job on the bends to make it fit better, but u get what you pay for....

 

[guntersxr]

4" magnaflow, no rubbing here...