u/Superb-Average-4160

Figured I’d throw this in here so it helps anyone else. Had a ton of help from the Reddit community on this.

2026 SIERRA 2500 Denali Ultimate
-Cognito Torsion Keys
-Fox 2.0 PSSRs
-Kryptonite UCA’s
-Rough Country mudflap delete kit on Amazon
-Nitto Ridge Grapplers 37x11.50r20

Note; we installed the Cognito PISK kit but it caused binding in the steering and so we uninstalled it and went right back to factory feeling.

Note; we didn’t need to cut off the bump stop in the front either, there’s plenty of room with Kryptonites UCA’s that cutting it isn’t needed.

Using the factory wheels with that Tire there’s absolutely zero rubbing whatsoever on the frame or the sway bar. No trimming of the front valence either. All that had to happen was hammer in the front felt just a little bit, looked like two good whacks and it was done.

So if anyone else is trying to run this combo just know you can run 37x11.50s with zero rubbing whatsoever. The truck rides incredible now, super plush with the fox shocks. Tires I’m running em at 60PSI. Couldn’t be happier.

little confused by everything I’m seeing when it comes to leveling kits on this truck. New to GMC and the 2500 platform. Looking at doing a leveling kit and not just crank the torsion keys. Also I like the look of the stock wheels. Truck has the max tow package not sure if that makes any difference. Was looking preferably for 37x11.50 or 12.50.

Getting mixed information from nearly every shop I call.

One says 35x12.50 & 37x11.50 fit on the factory wheel no spacer needed and doesn’t rub but you do have to trim which I’m fine with.

Another says there’s zero issue with height but the 12.50 and 11.50’s will rub on the factory UCA’s no matter what and I need to buy different wheels.

Another place says cognito UCA’s are the only ones that don’t rub and there’s no problem at all. But then they say Cognitos arms aren’t built well and to go with CST instead but those rub.

My last truck was a long travel Mazzulla built tundra. That thing is long gone and not trying to go the full BDS coil over conversion. Any insight from the crew would be incredibly appreciated.

Just picked up a 2026 Denali ultimate and have been hunting to find AEVs bumper and guard on an onyx black 2500, with a little Ai wizardry here it is. Hope it helps anyone else looking for the same thing.