Spitfire's Formula Four Radials deliver precision engineering for serious skaters. These 54mm wheels feature a 93D durometer rating, striking the ideal balance between grip and slide for technical street skating and smooth transitions. The radial shape provides consistent contact with varied terrain, ensuring predictable performance whether you're carving concrete or hitting ledges. Built with Spitfire's proven urethane formula, these wheels offer durability without sacrificing responsiveness. Perfect for skaters who demand reliability and control in their setup.