Spitfire Formula 4 features more speed and control on all surfaces, unmatched flatspot resistance, smooth anti-stick slide, high rebound compound. 100% true performance urethane.
OG Classics are Spitfires original cut-away shape. Features a wider riding surface shape, lightened with cut away sidewalls.
54mm x 32.3mm with a 22.2mm riding surface and Formula Four 99A durometer.