According to Milos:
“I bought the Thule Hyper XL and it fits perfectly on the Highlander with lots of room to spare for the rear liftgate. The clamps have a good fit, too. We’re going to load it up and test it out on a long road trip starting this weekend.”
Interesting. When I go to the Thule website and use their cargo box fit guide, it reports that: “There is currently no solution for the combination you have selected.” But, based on the above, it appears that the Hyper XL works just fine with the new Highlander.
As an aside, though this is a relatively pricey box, with an MSRP of $959.95, it sure looks nice. Below are a couple of stock images of the Hyper XL.
It weighs in at 47 pounds, meaning that you can stash 103 lbs of gear in it without exceeding the weight limit of the OEM crossbars. And it holds 17 cu ft of gear, so it’s pretty spacious.
For what it’s worth, the Hyper XL is currently available on Amazon with free shipping. Oh, and I’ve e-mailed Milos to see if he’d be willing to share with us any photos or additional details. I’ll update as appropriate.