[56mm Natural]
[52mm NAT & GRN]
[53mm Green]
[53mm Orange]
[54mm Blue]
[52mm Pink]
Spitfire Formula Four OG Classics 99A. More speed and control on all surfaces. Unmatched flatspot resistance. Smooth anti-stick slide. High rebound compund. 100% true performance urethane. Spitfires original cut-away shape. Features a wider riding surface shape, lightened with cut away sidewalls. 54mm x 32.5mm, 99A.