F1 Streetuburners are a true flatspot resistant urethane that don't sacrafice the slide when you want it. The Spitfire F1SB Kennedy Trunk Skunk Haze Swirl Wheels are formulated to withstand any street terrain. An Cory Kennedy signature wheel. Pro Edition. This is a purple swirl wheel. Sizes available as seen below. Available in colorways as seen below. Wheels sold in set of four.