2015 lml stock exhuast size

[diesel53]

Is the stock exhaust 4 inch already? Trying to decide whether to buy an exhaust or just tubing to delete my truck.

 

[Ne-max]

Yes. But you do have to cut factory exhaust if you do just a dpf delete.

 

[diesel53]

Yes. But you do have to cut factory exhaust if you do just a dpf delete.

That's the plan, cut out dpf and anything else.

 

[drperry]

DPF back is 4“ ish... Between DPF and cat is 3"...

There's parts that are 2.5", and not just the down pipe.