These risers are located on the back or rear of standard SmoothStar complete boards. There are two seperate risers that are used in combination. One riser is flat: 8.1cm x 5.7cm x 1.1cm. The other riser is angled: 8.3cm x 5.7cm x 1.15cm on the highest side. The angled riser gives better performance and more drive for your surf turns.
8.1cm x 5.7cm x 1.1cm
8.3cm x 5.7cm x 1.15cm