I also have the IronCross 4" SS nerf bars.Have had great luck with them now for nearly 2 years.No rust at this point,and shines up nicely.

 

I like the N-Fabs but I have two questions. Firs, do they work with the factory mud flaps and did you have to do any drilling to mount them? ......Thanks

 

I have the stock Mopar chrome ones on my truck, and we had a boatload of snow and road salt this winter. I had the truck washed about once a week and there's not a mark or spot of rust on them.

Now the exhaust tips are another story...