Nich

I was thinking about buying a flowmaster 17417 Cat-back System - Dual Rear/Side Exit - American Thunder



I was wondering if there were any pieces that needed to be welded on.

I drive a 2006 5.4L. f150 king ranch
Right now everything is stock

Any also opinions on the pipes going out the back or sides
Thanks

FlowmasterMufflers

This is a bolt-on system and welding is not mandatory for installation. However, because of the heavy gauge tubing that is used in our systems, vehicle body movement, and the inevitable bumps and vibration produced by standard driving conditions, we do recommend that 1" welds are made at all of the slip-fit connections to ensure that your system never moves out of place.

Nich

Thanks. That helps a lot.