An upper roller assembly for a sliding vehicle closure system includes a first bracket secured to a sliding vehicle closure. A ball-type roller is secured to the first bracket at a location spaced apart from the sliding vehicle closure for engaging and moving along an upper guide rail during opening and closing of the sliding vehicle closure. The ball-type roller is fixed in position relative to the sliding vehicle closure during opening and closing thereof. A second bracket is connected to first bracket. The second bracket is moveable relative to the sliding vehicle closure during opening and closing thereof. Guide rollers guide movement of the sliding vehicle closure during opening and closing thereof. The guide rollers are rotatably connected to the second bracket for engaging and moving along the upper guide rail during opening and closing of the sliding vehicle closure.