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.
Radial Shape: A round edge, medium width riding surface shape. Offers the versatility of the Classic shape and the width of a conical.
This wheel measures 56mm x 35mm with a 21.5mm riding surface and Formula 4 99A durometer.