Thule now has a fit kit for the MDX. You need the 400 Aero Foot kit, the LB58 Load Bars and the (new) 2098 Fit Kit. I had been waiting for the fit kit to become available and received it a few weeks ago. It fits fairly well on the car, although it has to be installed a little too far forward for my tastes. The Thule fork mount fits nicely on it though. I've removed the factory roof rack (although I'm waiting for the replacement molding to arrive from my dealer), because it looks too cluttered up there with 2 sets of racks. I'm sure the Thule rack is _much_ stronger. If you take the factory roof rack off, you can see its held on only by 2 small screw posts on each side of the rack.