Story time: I actually went through this exact same thing with my new Enclave. I was super worried about the moonroof clearance too, but I ended up trying the Yakima JetStream Crossbars 60 inch Black with the Yakima SightLine FX Towers for Flush Rails.

Honestly, I'm sooo happy I did because:
* Clearance is literally perfect—no issues with the glass at all.
* Super quiet on the highway, basically zero whistling.
* Lower profile than the OEM stuff I saw at the dealer.

It was about $600 for the kit, but the quality is highkey better than the factory bars imo. Good luck with the trip! 👍

Honestly, if you're hauling heavy camping gear, you gotta prioritize structural integrity and T-slot compatibility. Since the 2025 Enclave is still fresh, the fitment data is sparse, but based on the rail specs, I highkey recommend looking at the Thule WingBar Evo 135 Load Bars paired with the Thule Evo Flush Rail Foot Pack.

I've seen some testing on these flush rails, and the Thule setup is basically the gold standard for safety cuz of the torque-limiter keys—you literally can't over-tighten them and crush your rails. Regarding the moonroof, these sit high enough to avoid collision but low enough to stay aerodynamic. If you're worried about that annoying whistling, the Thule WindDiffuser technology is legit. Another solid, more rugged option is the Rhino-Rack Vortex ROC25 Flush Roof Rack which has a really high dynamic load rating if you're planning on a massive box. Just make sure to double-check the bolt-hole alignment, but these should be way more reliable than some generic kit. Good luck with the trip!! 👍

Honestly, the OEM prices are insane lol. If ur looking for a budget-friendly alternative that actually fits the 2025 redesign, definitely check out BougeRV Universal Anti-Theft Roof Rack Cross Bars 53 inch.

I've used these on similar flush rails and they're basically a steal at under $150.

* Low profile so they wont whistle at highway speeds
* Adjustable clamps for that flush rail grip
* Solid weight capacity for heavy camping gear

Just measure the rail spread first to be safe, but they should clear the moonroof no problem! gl!

^ This. Also, it's pretty frustrating that 2025 owners are basically beta testers for these rack companies right now. Unfortunately, the options are still kinda slim if you dont want to overpay at the dealership. Here is the gist of what people are finding:

• OEM parts fit perfectly but the price is honestly insulting.
• Yakima setups are usually the quietest for long highway hauls.
• Thule is built like a tank but their mounting kits are hard to track down lately. Honestly, just go with Yakima across the board. You cant really go wrong with their gear for flush rails, and they usually handle the moonroof clearance better than the others. Good luck with the trip, sounds like it is gonna be a blast once you get the gear sorted!

Ok so, I literally just went through this exact same headache last month after picking up my Avenir trim. Honestly, I'm sooo happy with the redesign, but trying to find parts for a brand new model year is such a pain! I spent hours looking at Thule and Yakima too, but like you said, their fitment guides are basically useless right now cuz the 2025 is so fresh.

I ended up biting the bullet and getting the GM Buick Enclave Roof Rack Cross Rail Package 85655781. I know, I know—they’re kinda pricey compared to some random Amazon bars, but let me tell you, it was worth it for the peace of mind alone. Since these are the OEM ones, they fit the flush rails perfectly without any weird gaps. Plus, I was super worried about the panoramic moonroof too!! Happy to report that there's plenty of clearance. I can tilt and slide the glass all the way back with no issues at all.

As for the noise, they’re surprisingly quiet. I’ve been running them with a Thule Motion XT XL Cargo Carrier and even at highway speeds, there's barely any whistling. It’s a really low-profile look, which I love. If your looking for an aftermarket alternative, I think some guys on the Trax forums (similar rail style) are using the Yakima JetStream Crossbars 60 inch with the SightLine towers, but honestly, for a 2025, the factory bars just work with zero guesswork. Anyway, hope that helps ur trip prep! gl!