Adjustable Rack Cargo Chocks

Our Expedition Racks and Crossbars are built for serious utility. While the physical structure is capable of supporting significant weight, we always recommend adhering to the vehicle manufacturer’s official load ratings for safety. Making claims beyond the vehicle manufacturer’s official load ratings would be considered irresponsible and potentially unsafe.

For the Rivian R1T and R1S, that means (per crossbar pair/4 mounting points):

Static Load (parked): Up to 780+ lbs

Dynamic Load (while driving): 250 lbs

For the Tesla Cybertruck, that means (per crossbar pair/4 mounting points)

Static Load (parked): Unknown

General Load: 220 lbs

*Tesla didn’t specify whether this 220 lbs limitation is dynamic or static

Our Expedition Rack utilizes all six factory mounting points on the Rivian R1S, and the full system does the same for the Cybertruck. Based on the engineering and distribution, we believe the dynamic load rating far exceeds 330 lbs, with the static load rating estimated at approximately three times that amount. While the system is ideal for mounting rooftop tents, recovery gear, cargo boxes, and other overlanding essentials, please ensure that all loads are evenly distributed and securely fastened. All items are carried at your own risk. Mars Adventure Gear is not responsible for any damage to your vehicle or rack resulting from improper use or overloading.

At Mars Adventure Gear, we take pride in creating durable, high-quality products built for real-world adventures. That’s why we stand behind our gear with a warranty coveringMars-branded products, protecting the original purchaser against defects in materials and workmanship within the timeframes specified for each product. All Mars racks, carriers, crossbars, and mounts are backed by a limited lifetime warranty. Accessories such as rooftop tents, awnings, and other soft goods are covered by a 1-year limited warranty. For more details please refer to our warranty policy.

Mars Adventure Gear is proudly based in Fremont, California, with additional warehouse and operations centers across the state. All Mars products are locally designed and engineered, using globally sourced materials from our trusted supply network.