I have a Yakima Load Warrior with Extension on mine. I have a custom mount, soon to be replaced, on my cross bars for a hi-lift, I keep my MaxAx and shovel attached to the rack, I added a custom light mount to the front as well as side and rear lights (all soon to be replaced/upgraded). Recently also added Yakima BOA bike mounts to the cross bars (learned I need longer cross bars). At times I've carried my spare up there and other things.