Spitfire Formula Four Wheels Conical Full 99DU Natural 56 MM

56MM. Wider riding surface and cutaway design for unmatched control and lasting speed everywhere.
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Formula Four Performance Urethane
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*Formulated for a harder-faster ride*
*Unmatched flatspot resistance*
*Smooth anti-stick slide*
*More speed and control*
*100% True performane urethane*