The Ricta Chrome Core Red/Gold Wheels are a Chrome-colored cores with slim, lightweight shapes, updated wheel and core embossed graphics, larger back graphics, 81B White Lightning urethane and 78D durable cores. More than 18 months of research and development has created the White Lightning Formula, the world's highest performance urethane. More resistant to flat spots than any other wheel formula on the market and simply the fastest. Sizes that are available are shown below. Wheels are sold in sets of four.