Add extra support, function and stability to your AdaRac truck rack and turn it into an overlanding rack system with the AdaGrid top mount cross bar rails. Great for extra storage for cargo, rack tents, cargo baskets and other t-slot mounting rack accessory attachments for kayaks, gear and more. These AdaGrid top rails cross bars for your m-series, aluminum contour & pro series Adarac are the perfect addition to your Adarac, each top cross bar rails kit comes with two AdaGrid bars that attach to your Adarac cross bars t-slots with no drilling. These Adagrid top mounting bars are constructed out of premium-grade, corrosion-resistant aluminum that has been finished with a sleek black powder-coat finish storing even more gear on top. The weight capacity is 500 lbs static and 250 lbs dynamic with a set of two. The anti-slip, anti-vibration rubber channel insert assists in keeping cargo secure for ultimate security. This upgrade to your Adarac is great whether you are a true overlander, construction worker, or just a weekend warrior. Installing the AdaGrid bars to your Adarac easy and that just bolt to your contour or pro series Adarac truck rack cross bars. Whether you are a contractor, overlanding adventurer or a DIY’er, these top mounting bars are a great addition to your Adarac truck rack. Made in the USA. All AdaRac products are manufactured by Agri-Cover in Jamestown, ND!