Originally Posted by
syfi
Looking to replace the secondary cats with an X-pipe. Does anyone know the inside diameter of the pipes after the cats have been removed? Found these at a great price and was wondering which one would work on the SRT6?
Stamped X Pipe
To answer your question, our SRT6 pipes coming back to meet the rear cats are approx. 2-1/4" I.D., and 2-3/8" O.D.(+/-). What you also need to know, is that the O.C.(on center dimension) is 5" at the front of the rear cats(OEM), and 3-3/8" at the rear, where they meet the H-pipe.