F1 Streetuburners are a true flatspot resistant urethane that don't sacrafice the slide when you want it. The Spitfire F1 Streetburner Chima Fire Island Wheels are formulated to withstand any street terrain. A Chima Ferguson signature wheel. Pro Edition. None faster! 100DU. Graphics at one side. Sizes available as seen below. Available in colorways as seen below. Colors are limited to specific size. See colors below for correlating size. Wheels sold in set of four.