Spitfire's Formula Four technology combines a number of technologies to bring you one of the most durable skate wheels on the market. They were rigorously developed by the Spitfire team with the aim of not sacrificing any specific quality at the expense of another. Spitfire are known to be one of the leaders in the skate wheel manufacturing industries.

This is a slightly softer wheel, which will give you some good speed at a skate park or ramp, and feel buttery over rough terrain. The 'full' conical profile of this wheel gives you a much larger contact patch and more control than regular F4 conical's.