no the arylic does not touch the rollbar. the acrylic is about 3/4 of an inch away and in front of the rollbar. Most of that distance is fore to aft. there is less than 1/4 of an inch distance left to right between the rollbar and the windscreen. this is what you would want to block the most wind. The problem is that the windscreen is only attached by the two clips on the panel between the seats(roadster only clips). The windscreen is unsupported for its's entire height from the convertible top hard cover up. It is the wind that it is blocking that causes the windscreen to vibrate. The problem is that when you look thru the rear view mirror everything you see is "thru" the acrylic windscreen. It is moving around of the windscreen from the wind that makes everything appear to be moving in the rear view mirror. The picture looks like the blocks which appear to be about 1 1/2 x 2 x 1 1/2 only rest against the back of the windscreen which I assume is enough to keep the acrylic from vibrating. My concern is how do they attach the dampening block to the rollbar and how do they keep it in place rotational wise on the rollbar.