Yes, 2.75”. i found the bars to be very strong, but the factory rails mounting set up Puts them a bit too close together for our box. I bought the factory bars but decided they didn’t give enough width across the car for the box and one bike rack. They also have a rather extreme bow to them, and the airfoil curve is so tight that it was really stressing the bottom of the box. I bit the bullet and bought a new Yakima rack for it, and that will work a lot better for us. I’m going to sell the factory cross bars. They are perfect if you are just running a ski rack or something. Just my 2 cents.