[05white2500hd]

i am looking for a 4 inch pipe to run from my cat back. I am currently running no muffler on my 05 but still have the cat on for now. i just want to upgrade to a 4 inch pipe running from the cat back and then i will order my cat delete so i can put it back on if i need to.

 

[Horsepower Upgrades]

Are you wanting a pipe to run from the four bolt flange (cat flange)to the muffler or the other way?