Review on ANTS PART Black Aluminum Roof Rack Cross Bars for GMC Acadia 2017-2021 with Roof Rack Rails by Edward Perez

I just installed it on my 2021 Acadia. The front ones were easier to put on than the back ones, but they fit snugly and look great! The back rail is actually shorter than the front, just make sure you insert the rail all the way into the bracket before tightening the bottom screws. This will help attach the rear brackets to the factory side rails. Easy installation but the instruction page leaves a lot to be desired. There are 16 bolts, 2 sets of 8 but only 8 washers that fit both bolt sizes. Since they fit both, I used them on the big screws to attach the holders to the side rails.