Expert Answers about Rivian

• How Big is the Clamp on Replacement Mounting Bracket for Yakima SkyRise Rooftop Tent
• I reached out to Yakima and found that the opening for the Replacement Mounting Bracket for Yakima SkyRise Rooftop Tent # 8880735 is 4". This allows it to fit their 4" HD crossbars. In general, the Yakima SkyRise Tent like the # Y07436 will fit most aftermarket round, square, aero, and elliptical crossbars. As long as your cross brace does not exceed the 4" opening and is similar in design to crossbars you should be able to attach the SkyRise Tent to your truck.
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• Can I Mount a FatCat EVO 6 and a DeepSpace 10 Cargo Box on a Set of Rivian Crossbars?
• It looks like Rivian's crossbars can extend up to 63-3/4" so it'll be really close but it'll fit. The Yakima FatCat EVO 6 item # Y03096 measures 40-1/2" long and the DeepSpace 10 item # Y65RR is 23" wide. You may need to overhang the FatCat an inch or two off the side. You won't have any issues mounting two of the DeepSpace 10 item # Y65RR next to each other. You will need to make sure your crossbars are spread out between 32" - 46".
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