Rock Crawl Mode, as well as other drive modes, limited slip front diff, locking rear diff, 33" water fording specification, etc. etc. It's hard to do all of that through the aftermarket for less money. And, with the Tremor you get the full factory warranty.
If I got a F-250, I'd get the Tremor package and call it a day. 35s are plenty and the peace of mind would be nice.
Dodge owner happy with the spendy Tremor package saying "35s are plenty"
I got a full factory warranty, drive modes and more. Enjoy your "if I got" truck