Matter's original high performance racing wheel, the Super Juice. The Super Juice wheels were the first ever Matter wheels to use Hollow Core Technology. This core has been fundamental to Matter's success over the years. The Hollow Core allows us for a very stiff core, without the added weight of a traditional single piece core. The Super Juice wheel is perfect for road and marathon events because of its fast rolling performance. This wheel comes in 84mm and F1 / 86A. BEAT YOUR BEST.