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.

53mm x 33.3mm with a 19.5mm riding surface and Formula Four 99A durometer.