What didn't fit? Was it the distance between crossbars or did the clamp style attachment system not work? I am going to be really bummed if our Skybox 16 doesn't work out.Rivian R1S with Thule Motion XT XXl Roof Box installed.
Unfortunately my Yakima Skybox didn’t fit my R1S so I had to get a Thule instead. Pretty easy to fit, lots of room and the piano black paint matches that of the Rivian. Thule seems to be the way to go.
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The clamp under the skybox didn’t work. Was too short.What didn't fit? Was it the distance between crossbars or did the clamp style attachment system not work? I am going to be really bummed if our Skybox 16 doesn't work out.